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142303501830 = 23573731158889
BaseRepresentation
bin1000010010000111110…
…0110001111000000110
3111121022101010220012210
42010201330301320012
54312414144024310
6145212345524250
713165261544040
oct2044174617006
9447271126183
10142303501830
1155394687166
12236b51a3686
131055ab92029
146c5d52ca90
153a7d085820
hex2121f31e06

142303501830 has 128 divisors (see below), whose sum is σ = 402163107840. Its totient is φ = 31545123840.

The previous prime is 142303501811. The next prime is 142303501843. The reversal of 142303501830 is 38105303241.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2387026 + ... + 2445914.

It is an arithmetic number, because the mean of its divisors is an integer number (3141899280).

Almost surely, 2142303501830 is an apocalyptic number.

142303501830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 142303501830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201081553920).

142303501830 is an abundant number, since it is smaller than the sum of its proper divisors (259859606010).

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

142303501830 is a wasteful number, since it uses less digits than its factorization.

142303501830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59254.

The product of its (nonzero) digits is 8640, while the sum is 30.

The spelling of 142303501830 in words is "one hundred forty-two billion, three hundred three million, five hundred one thousand, eight hundred thirty".

Divisors: 1 2 3 5 6 7 10 14 15 21 30 35 37 42 70 74 105 111 185 210 222 259 311 370 518 555 622 777 933 1110 1295 1554 1555 1866 2177 2590 3110 3885 4354 4665 6531 7770 9330 10885 11507 13062 21770 23014 32655 34521 57535 58889 65310 69042 80549 115070 117778 161098 172605 176667 241647 294445 345210 353334 402745 412223 483294 588890 805490 824446 883335 1208235 1236669 1766670 2061115 2178893 2416470 2473338 4122230 4357786 6183345 6536679 10894465 12366690 13073358 15252251 18314479 21788930 30504502 32683395 36628958 45756753 54943437 65366790 76261255 91513506 91572395 109886874 128201353 152522510 183144790 228783765 256402706 274717185 384604059 457567530 549434370 641006765 677635723 769208118 1282013530 1355271446 1923020295 2032907169 3388178615 3846040590 4065814338 4743450061 6776357230 9486900122 10164535845 14230350183 20329071690 23717250305 28460700366 47434500610 71151750915 142303501830