142529931 has 6 divisors (see below), whose sum is σ = 205876580. Its totient is φ = 95019948.

The previous prime is 142529923. The next prime is 142529939. The reversal of 142529931 is 139925241.

142529931 is a `hidden beast` number, since 1 + 42 + 529 + 93 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (142529923) and next prime (142529939).

It is not a de Polignac number, because 142529931 - 2³ = 142529923 is a prime.

It is a super-2 number, since 2×142529931² = 40629562461729522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142529939) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7918321 + ... + 7918338.

Almost surely, 2^142529931 is an apocalyptic number.

142529931 is a deficient number, since it is larger than the sum of its proper divisors (63346649).

142529931 is a wasteful number, since it uses less digits than its factorization.

142529931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15836665 (or 15836662 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 142529931 is about 11938.5899921222. The cubic root of 142529931 is about 522.3585307193.

The spelling of 142529931 in words is "one hundred forty-two million, five hundred twenty-nine thousand, nine hundred thirty-one".