42931356 has 24 divisors (see below), whose sum is σ = 107879184. Its totient is φ = 13209600.

The previous prime is 42931349. The next prime is 42931391. The reversal of 42931356 is 65313924.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137445 + ... + 137756.

It is an arithmetic number, because the mean of its divisors is an integer number (4494966).

Almost surely, 2^42931356 is an apocalyptic number.

It is an amenable number.

42931356 is an abundant number, since it is smaller than the sum of its proper divisors (64947828).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42931356 is a wasteful number, since it uses less digits than its factorization.

42931356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275221 (or 275219 counting only the distinct ones).

The product of its digits is 19440, while the sum is 33.

The square root of 42931356 is about 6552.2023778269. The cubic root of 42931356 is about 350.1532825200.

The spelling of 42931356 in words is "forty-two million, nine hundred thirty-one thousand, three hundred fifty-six".