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142179888 = 243193147107
BaseRepresentation
bin10000111100101…
…11111000110000
3100220112111010210
420132113320300
5242344224023
622035224120
73344336424
oct1036277060
9326474123
10142179888
1173290944
123b748040
13235c1616
1414c50b84
15c737593
hex8797e30

142179888 has 160 divisors (see below), whose sum is σ = 411402240. Its totient is φ = 42128640.

The previous prime is 142179839. The next prime is 142179893. The reversal of 142179888 is 888971241.

142179888 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1328731 + ... + 1328837.

It is an arithmetic number, because the mean of its divisors is an integer number (2571264).

Almost surely, 2142179888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142179888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205701120).

142179888 is an abundant number, since it is smaller than the sum of its proper divisors (269222352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142179888 is a wasteful number, since it uses less digits than its factorization.

142179888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215 (or 209 counting only the distinct ones).

The product of its digits is 258048, while the sum is 48.

The square root of 142179888 is about 11923.9208316728. The cubic root of 142179888 is about 521.9305554922.

The spelling of 142179888 in words is "one hundred forty-two million, one hundred seventy-nine thousand, eight hundred eighty-eight".

Divisors: 1 2 3 4 6 8 12 16 19 24 31 38 47 48 57 62 76 93 94 107 114 124 141 152 186 188 214 228 248 282 304 321 372 376 428 456 496 564 589 642 744 752 856 893 912 1128 1178 1284 1457 1488 1712 1767 1786 2033 2256 2356 2568 2679 2914 3317 3534 3572 4066 4371 4712 5029 5136 5358 5828 6099 6634 7068 7144 8132 8742 9424 9951 10058 10716 11656 12198 13268 14136 14288 15087 16264 17484 19902 20116 21432 23312 24396 26536 27683 28272 30174 32528 34968 39804 40232 42864 48792 53072 55366 60348 63023 69936 79608 80464 83049 95551 97584 110732 120696 126046 155899 159216 166098 189069 191102 221464 241392 252092 286653 311798 332196 378138 382204 442928 467697 504184 573306 623596 664392 756276 764408 935394 1008368 1146612 1247192 1328784 1512552 1528816 1870788 2293224 2494384 2962081 3025104 3741576 4586448 5924162 7483152 8886243 11848324 17772486 23696648 35544972 47393296 71089944 142179888