42045992 has 16 divisors (see below), whose sum is σ = 80759700. Its totient is φ = 20510080.

The previous prime is 42045989. The next prime is 42046007. The reversal of 42045992 is 29954024.

It can be written as a sum of positive squares in 2 ways, for example, as 41654116 + 391876 = 6454^2 + 626^2 .

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, 63767 + ... + 64422.

Almost surely, 2^42045992 is an apocalyptic number.

It is an amenable number.

42045992 is a deficient number, since it is larger than the sum of its proper divisors (38713708).

42045992 is a wasteful number, since it uses less digits than its factorization.

42045992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128236 (or 128232 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 42045992 is about 6484.2880873693. The cubic root of 42045992 is about 347.7294986934.

The spelling of 42045992 in words is "forty-two million, forty-five thousand, nine hundred ninety-two".