87642942 has 8 divisors (see below), whose sum is σ = 175285896. Its totient is φ = 29214312.

The previous prime is 87642917. The next prime is 87642943. The reversal of 87642942 is 24924678.

It is a sphenic number, since it is the product of 3 distinct primes.

87642942 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 87642894 and 87642903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87642943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7303573 + ... + 7303584.

It is an arithmetic number, because the mean of its divisors is an integer number (21910737).

Almost surely, 2^87642942 is an apocalyptic number.

87642942 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

87642942 is a wasteful number, since it uses less digits than its factorization.

87642942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14607162.

The product of its digits is 193536, while the sum is 42.

The square root of 87642942 is about 9361.7809203164. The cubic root of 87642942 is about 444.1936193932.

The spelling of 87642942 in words is "eighty-seven million, six hundred forty-two thousand, nine hundred forty-two".