87142029 has 16 divisors (see below), whose sum is σ = 125664000. Its totient is φ = 53395776.

The previous prime is 87142021. The next prime is 87142043. The reversal of 87142029 is 92024178.

It is a happy number.

It is not a de Polignac number, because 87142029 - 2³ = 87142021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87142021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4647 + ... + 13995.

It is an arithmetic number, because the mean of its divisors is an integer number (7854000).

Almost surely, 2^87142029 is an apocalyptic number.

It is an amenable number.

87142029 is a deficient number, since it is larger than the sum of its proper divisors (38521971).

87142029 is a wasteful number, since it uses less digits than its factorization.

87142029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9604.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 87142029 is about 9334.9895018688. The cubic root of 87142029 is about 443.3457564624.

The spelling of 87142029 in words is "eighty-seven million, one hundred forty-two thousand, twenty-nine".