87042659 has 18 divisors (see below), whose sum is σ = 99367164. Its totient is φ = 75613440.

The previous prime is 87042653. The next prime is 87042661. The reversal of 87042659 is 95624078.

It is not a de Polignac number, because 87042659 - 2⁴ = 87042643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87042653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 897299 + ... + 897395.

It is an arithmetic number, because the mean of its divisors is an integer number (5520398).

Almost surely, 2^87042659 is an apocalyptic number.

87042659 is a deficient number, since it is larger than the sum of its proper divisors (12324505).

87042659 is an equidigital number, since it uses as much as digits as its factorization.

87042659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 87042659 is about 9329.6655352697. The cubic root of 87042659 is about 443.1771733471.

The spelling of 87042659 in words is "eighty-seven million, forty-two thousand, six hundred fifty-nine".