42457904 has 10 divisors (see below), whose sum is σ = 82262220. Its totient is φ = 21228944.

The previous prime is 42457901. The next prime is 42457927. The reversal of 42457904 is 40975424.

42457904 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×42457904² = 3605347224146432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42457901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1326794 + ... + 1326825.

It is an arithmetic number, because the mean of its divisors is an integer number (8226222).

Almost surely, 2^42457904 is an apocalyptic number.

It is an amenable number.

42457904 is a deficient number, since it is larger than the sum of its proper divisors (39804316).

42457904 is a wasteful number, since it uses less digits than its factorization.

42457904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2653627 (or 2653621 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 42457904 is about 6515.9729895082. The cubic root of 42457904 is about 348.8613445257.

The spelling of 42457904 in words is "forty-two million, four hundred fifty-seven thousand, nine hundred four".