42915724 has 12 divisors (see below), whose sum is σ = 75166000. Its totient is φ = 21439728.

The previous prime is 42915703. The next prime is 42915727. The reversal of 42915724 is 42751924.

It is a self number, because there is not a number n which added to its sum of digits gives 42915724.

It is not an unprimeable number, because it can be changed into a prime (42915727) 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, 1762 + ... + 9430.

Almost surely, 2^42915724 is an apocalyptic number.

It is an amenable number.

42915724 is a deficient number, since it is larger than the sum of its proper divisors (32250276).

42915724 is a wasteful number, since it uses less digits than its factorization.

42915724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9072 (or 9070 counting only the distinct ones).

The product of its digits is 20160, while the sum is 34.

The square root of 42915724 is about 6551.0093878730. The cubic root of 42915724 is about 350.1107785392.

The spelling of 42915724 in words is "forty-two million, nine hundred fifteen thousand, seven hundred twenty-four".