42400612 has 12 divisors (see below), whose sum is σ = 75417916. Its totient is φ = 20852640.

The previous prime is 42400607. The next prime is 42400613. The reversal of 42400612 is 21600424.

It can be written as a sum of positive squares in 2 ways, for example, as 746496 + 41654116 = 864^2 + 6454^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 42400612.

It is not an unprimeable number, because it can be changed into a prime (42400613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86643 + ... + 87130.

Almost surely, 2^42400612 is an apocalyptic number.

It is an amenable number.

42400612 is a deficient number, since it is larger than the sum of its proper divisors (33017304).

42400612 is a wasteful number, since it uses less digits than its factorization.

42400612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173838 (or 173836 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 42400612 is about 6511.5752318467. The cubic root of 42400612 is about 348.7043579654.

The spelling of 42400612 in words is "forty-two million, four hundred thousand, six hundred twelve".