42618724 has 12 divisors (see below), whose sum is σ = 77825664. Its totient is φ = 20382824.

The previous prime is 42618703. The next prime is 42618733. The reversal of 42618724 is 42781624.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 42618724.

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, 231532 + ... + 231715.

It is an arithmetic number, because the mean of its divisors is an integer number (6485472).

Almost surely, 2^42618724 is an apocalyptic number.

It is an amenable number.

42618724 is a deficient number, since it is larger than the sum of its proper divisors (35206940).

42618724 is a wasteful number, since it uses less digits than its factorization.

42618724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463274 (or 463272 counting only the distinct ones).

The product of its digits is 21504, while the sum is 34.

The square root of 42618724 is about 6528.3017699858. The cubic root of 42618724 is about 349.3012562891.

The spelling of 42618724 in words is "forty-two million, six hundred eighteen thousand, seven hundred twenty-four".