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142402302 = 232717193499
BaseRepresentation
bin10000111110011…
…10001011111110
3100220221210020100
420133032023332
5242423333202
622044101530
73346254030
oct1037161376
9326853210
10142402302
1173422a59
123b8348a6
132366b923
1414cabc50
15c77d41c
hex87ce2fe

142402302 has 96 divisors (see below), whose sum is σ = 393120000. Its totient is φ = 36267264.

The previous prime is 142402301. The next prime is 142402327. The reversal of 142402302 is 203204241.

It is a super-2 number, since 2×1424023022 = 40556831229798408, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142402301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 38949 + ... + 42447.

It is an arithmetic number, because the mean of its divisors is an integer number (4095000).

Almost surely, 2142402302 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142402302, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196560000).

142402302 is an abundant number, since it is smaller than the sum of its proper divisors (250717698).

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

142402302 is a wasteful number, since it uses less digits than its factorization.

142402302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3550 (or 3547 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 142402302 is about 11933.2435657704. The cubic root of 142402302 is about 522.2025681418.

Adding to 142402302 its reverse (203204241), we get a palindrome (345606543).

The spelling of 142402302 in words is "one hundred forty-two million, four hundred two thousand, three hundred two".

Divisors: 1 2 3 6 7 9 14 17 18 19 21 34 38 42 51 57 63 102 114 119 126 133 153 171 238 266 306 323 342 357 399 646 714 798 969 1071 1197 1938 2142 2261 2394 2907 3499 4522 5814 6783 6998 10497 13566 20349 20994 24493 31491 40698 48986 59483 62982 66481 73479 118966 132962 146958 178449 199443 220437 356898 398886 416381 440874 465367 535347 598329 832762 930734 1070694 1130177 1196658 1249143 1396101 2260354 2498286 2792202 3390531 3747429 4188303 6781062 7494858 7911239 8376606 10171593 15822478 20343186 23733717 47467434 71201151 142402302