42939715 has 32 divisors (see below), whose sum is σ = 66769920. Its totient is φ = 25743744.

The previous prime is 42939707. The next prime is 42939733. The reversal of 42939715 is 51793924.

42939715 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42939715 - 2³ = 42939707 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6162 + ... + 11128.

It is an arithmetic number, because the mean of its divisors is an integer number (2086560).

Almost surely, 2^42939715 is an apocalyptic number.

42939715 is a deficient number, since it is larger than the sum of its proper divisors (23830205).

42939715 is a wasteful number, since it uses less digits than its factorization.

42939715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5011.

The product of its digits is 68040, while the sum is 40.

The square root of 42939715 is about 6552.8402239029. The cubic root of 42939715 is about 350.1760067136.

The spelling of 42939715 in words is "forty-two million, nine hundred thirty-nine thousand, seven hundred fifteen".