42000008 has 16 divisors (see below), whose sum is σ = 78936000. Its totient is φ = 20950416.

The previous prime is 41999987. The next prime is 42000011. The reversal of 42000008 is 80000024.

It is a junction number, because it is equal to n+sod(n) for n = 41999956 and 42000001.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2468 + ... + 9491.

It is an arithmetic number, because the mean of its divisors is an integer number (4933500).

Almost surely, 2^42000008 is an apocalyptic number.

It is an amenable number.

42000008 is a deficient number, since it is larger than the sum of its proper divisors (36935992).

42000008 is a wasteful number, since it uses less digits than its factorization.

42000008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12404 (or 12400 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 42000008 is about 6480.7413156212. The cubic root of 42000008 is about 347.6026865587.

The spelling of 42000008 in words is "forty-two million, eight", and thus it is an aban number and an uban number.