520824042 has 12 divisors (see below), whose sum is σ = 1128452130. Its totient is φ = 173608008.

The previous prime is 520824037. The next prime is 520824043. The reversal of 520824042 is 240428025.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 431351361 + 89472681 = 20769^2 + 9459^2 .

It is a junction number, because it is equal to n+sod(n) for n = 520823997 and 520824015.

It is not an unprimeable number, because it can be changed into a prime (520824043) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14467317 + ... + 14467352.

Almost surely, 2^520824042 is an apocalyptic number.

520824042 is an abundant number, since it is smaller than the sum of its proper divisors (607628088).

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

520824042 is a wasteful number, since it uses less digits than its factorization.

520824042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28934677 (or 28934674 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The square root of 520824042 is about 22821.5696655598. The cubic root of 520824042 is about 804.5697027783.

The spelling of 520824042 in words is "five hundred twenty million, eight hundred twenty-four thousand, forty-two".