42042008 has 8 divisors (see below), whose sum is σ = 78828780. Its totient is φ = 21021000.

The previous prime is 42041981. The next prime is 42042023. The reversal of 42042008 is 80024024.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2627618 + ... + 2627633.

Almost surely, 2^42042008 is an apocalyptic number.

It is an amenable number.

42042008 is a deficient number, since it is larger than the sum of its proper divisors (36786772).

42042008 is a wasteful number, since it uses less digits than its factorization.

42042008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5255257 (or 5255253 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 42042008 is about 6483.9808759743. The cubic root of 42042008 is about 347.7185154977.

The spelling of 42042008 in words is "forty-two million, forty-two thousand, eight".