42170904 has 48 divisors (see below), whose sum is σ = 114660000. Its totient is φ = 14001984.

The previous prime is 42170893. The next prime is 42170941. The reversal of 42170904 is 40907124.

It is a happy number.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 20097 + ... + 22095.

It is an arithmetic number, because the mean of its divisors is an integer number (2388750).

Almost surely, 2^42170904 is an apocalyptic number.

It is an amenable number.

42170904 is an abundant number, since it is smaller than the sum of its proper divisors (72489096).

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

42170904 is a wasteful number, since it uses less digits than its factorization.

42170904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2304 (or 2297 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 42170904 is about 6493.9128420391. The cubic root of 42170904 is about 348.0735080548.

The spelling of 42170904 in words is "forty-two million, one hundred seventy thousand, nine hundred four".