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142631514 = 232109139523
BaseRepresentation
bin10001000000001…
…10001001011010
3100221101102122200
420200012021122
5243003202024
622053031030
73351230214
oct1040061132
9327342580
10142631514
117356a193
123b925476
132371c05c
1414d2b5b4
15c7c62c9
hex880625a

142631514 has 48 divisors (see below), whose sum is σ = 314714400. Its totient is φ = 46679328.

The previous prime is 142631507. The next prime is 142631549. The reversal of 142631514 is 415136241.

It is a happy number.

142631514 is a `hidden beast` number, since 14 + 2 + 631 + 5 + 14 = 666.

142631514 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 272457 + ... + 272979.

It is an arithmetic number, because the mean of its divisors is an integer number (6556550).

Almost surely, 2142631514 is an apocalyptic number.

142631514 is an abundant number, since it is smaller than the sum of its proper divisors (172082886).

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

142631514 is a wasteful number, since it uses less digits than its factorization.

142631514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779 (or 776 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 142631514 is about 11942.8436312295. The cubic root of 142631514 is about 522.4825985673.

Adding to 142631514 its reverse (415136241), we get a palindrome (557767755).

The spelling of 142631514 in words is "one hundred forty-two million, six hundred thirty-one thousand, five hundred fourteen".

Divisors: 1 2 3 6 9 18 109 139 218 278 327 417 523 654 834 981 1046 1251 1569 1962 2502 3138 4707 9414 15151 30302 45453 57007 72697 90906 114014 136359 145394 171021 218091 272718 342042 436182 513063 654273 1026126 1308546 7923973 15847946 23771919 47543838 71315757 142631514