87165242 has 16 divisors (see below), whose sum is σ = 139622400. Its totient is φ = 40721520.

The previous prime is 87165227. The next prime is 87165263. The reversal of 87165242 is 24256178.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 22442 + ... + 26037.

It is an arithmetic number, because the mean of its divisors is an integer number (8726400).

Almost surely, 2^87165242 is an apocalyptic number.

87165242 is a deficient number, since it is larger than the sum of its proper divisors (52457158).

87165242 is a wasteful number, since it uses less digits than its factorization.

87165242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48541.

The product of its digits is 26880, while the sum is 35.

The square root of 87165242 is about 9336.2327520258. The cubic root of 87165242 is about 443.3851192953.

The spelling of 87165242 in words is "eighty-seven million, one hundred sixty-five thousand, two hundred forty-two".