87000042 has 8 divisors (see below), whose sum is σ = 174000096. Its totient is φ = 29000012.

The previous prime is 87000037. The next prime is 87000047. The reversal of 87000042 is 24000078.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (87000037) and next prime (87000047).

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

87000042 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 86999982 and 87000018.

It is not an unprimeable number, because it can be changed into a prime (87000047) 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, 7249998 + ... + 7250009.

It is an arithmetic number, because the mean of its divisors is an integer number (21750012).

Almost surely, 2^87000042 is an apocalyptic number.

87000042 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.

87000042 is a wasteful number, since it uses less digits than its factorization.

87000042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14500012.

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 87000042 is about 9327.3813045249. The cubic root of 87000042 is about 443.1048334736.

The spelling of 87000042 in words is "eighty-seven million, forty-two", and thus it is an aban number and an uban number.