42788904 has 32 divisors (see below), whose sum is σ = 107132640. Its totient is φ = 14241600.

The previous prime is 42788899. The next prime is 42788971. The reversal of 42788904 is 40988724.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30294 + ... + 31674.

It is an arithmetic number, because the mean of its divisors is an integer number (3347895).

Almost surely, 2^42788904 is an apocalyptic number.

It is an amenable number.

42788904 is an abundant number, since it is smaller than the sum of its proper divisors (64343736).

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

42788904 is a wasteful number, since it uses less digits than its factorization.

42788904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2681 (or 2677 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 42788904 is about 6541.3228020027. The cubic root of 42788904 is about 349.7655681815.

The spelling of 42788904 in words is "forty-two million, seven hundred eighty-eight thousand, nine hundred four".