520042939 has 16 divisors (see below), whose sum is σ = 592631200. Its totient is φ = 452376576.

The previous prime is 520042907. The next prime is 520042951. The reversal of 520042939 is 939240025.

It is a cyclic number.

It is not a de Polignac number, because 520042939 - 2⁵ = 520042907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520042969) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42217 + ... + 53125.

It is an arithmetic number, because the mean of its divisors is an integer number (37039450).

Almost surely, 2^520042939 is an apocalyptic number.

520042939 is a deficient number, since it is larger than the sum of its proper divisors (72588261).

520042939 is a wasteful number, since it uses less digits than its factorization.

520042939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11134.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 520042939 is about 22804.4499824047. The cubic root of 520042939 is about 804.1672852039.

The spelling of 520042939 in words is "five hundred twenty million, forty-two thousand, nine hundred thirty-nine".