42545904 has 40 divisors (see below), whose sum is σ = 112254720. Its totient is φ = 13879488.

The previous prime is 42545891. The next prime is 42545927. The reversal of 42545904 is 40954524.

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 7 ways as a sum of consecutive naturals, for example, 7174 + ... + 11685.

It is an arithmetic number, because the mean of its divisors is an integer number (2806368).

Almost surely, 2^42545904 is an apocalyptic number.

It is an amenable number.

42545904 is an abundant number, since it is smaller than the sum of its proper divisors (69708816).

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

42545904 is a wasteful number, since it uses less digits than its factorization.

42545904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18917 (or 18911 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 42545904 is about 6522.7221311351. The cubic root of 42545904 is about 349.1021996624.

The spelling of 42545904 in words is "forty-two million, five hundred forty-five thousand, nine hundred four".