42457708 has 12 divisors (see below), whose sum is σ = 75519472. Its totient is φ = 20880720.

The previous prime is 42457703. The next prime is 42457741. The reversal of 42457708 is 80775424.

It is a super-2 number, since 2×42457708² = 3605313937226528, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42457703) 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, 86760 + ... + 87247.

Almost surely, 2^42457708 is an apocalyptic number.

It is an amenable number.

42457708 is a deficient number, since it is larger than the sum of its proper divisors (33061764).

42457708 is a wasteful number, since it uses less digits than its factorization.

42457708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174072 (or 174070 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 37.

The square root of 42457708 is about 6515.9579495267. The cubic root of 42457708 is about 348.8608077044.

The spelling of 42457708 in words is "forty-two million, four hundred fifty-seven thousand, seven hundred eight".