42940331 has 8 divisors (see below), whose sum is σ = 49267680. Its totient is φ = 36661248.

The previous prime is 42940309. The next prime is 42940343. The reversal of 42940331 is 13304924.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42940331 - 2⁶ = 42940267 is a prime.

It is a super-2 number, since 2×42940331² = 3687744052779122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42940331.

It is not an unprimeable number, because it can be changed into a prime (42930331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10136 + ... + 13733.

It is an arithmetic number, because the mean of its divisors is an integer number (6158460).

Almost surely, 2^42940331 is an apocalyptic number.

42940331 is a deficient number, since it is larger than the sum of its proper divisors (6327349).

42940331 is a wasteful number, since it uses less digits than its factorization.

42940331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24133.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 42940331 is about 6552.8872262538. The cubic root of 42940331 is about 350.1776812116.

The spelling of 42940331 in words is "forty-two million, nine hundred forty thousand, three hundred thirty-one".