42881904 has 60 divisors (see below), whose sum is σ = 129246936. Its totient is φ = 13193856.

The previous prime is 42881899. The next prime is 42881921. The reversal of 42881904 is 40918824.

It is a super-4 number, since 4×42881904⁴ (a number of 32 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9582 + ... + 13325.

Almost surely, 2^42881904 is an apocalyptic number.

It is an amenable number.

42881904 is an abundant number, since it is smaller than the sum of its proper divisors (86365032).

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

42881904 is a wasteful number, since it uses less digits than its factorization.

42881904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22934 (or 22925 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 42881904 is about 6548.4275975229. The cubic root of 42881904 is about 350.0187853863.

The spelling of 42881904 in words is "forty-two million, eight hundred eighty-one thousand, nine hundred four".