42591968 has 24 divisors (see below), whose sum is σ = 84629160. Its totient is φ = 21098880.

The previous prime is 42591961. The next prime is 42591971. The reversal of 42591968 is 86919524.

It is a super-2 number, since 2×42591968² = 3628151476226048, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42591961) 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, 2618 + ... + 9593.

It is an arithmetic number, because the mean of its divisors is an integer number (3526215).

Almost surely, 2^42591968 is an apocalyptic number.

It is an amenable number.

42591968 is a deficient number, since it is larger than the sum of its proper divisors (42037192).

42591968 is a wasteful number, since it uses less digits than its factorization.

42591968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12330 (or 12322 counting only the distinct ones).

The product of its digits is 155520, while the sum is 44.

The square root of 42591968 is about 6526.2522170079. The cubic root of 42591968 is about 349.2281439729.

The spelling of 42591968 in words is "forty-two million, five hundred ninety-one thousand, nine hundred sixty-eight".