520535042 has 4 divisors (see below), whose sum is σ = 780802566. Its totient is φ = 260267520.

The previous prime is 520535033. The next prime is 520535131. The reversal of 520535042 is 240535025.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 482724841 + 37810201 = 21971^2 + 6149^2 .

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 as a sum of consecutive naturals, namely, 130133759 + ... + 130133762.

Almost surely, 2^520535042 is an apocalyptic number.

520535042 is a deficient number, since it is larger than the sum of its proper divisors (260267524).

520535042 is a wasteful number, since it uses less digits than its factorization.

520535042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260267523.

The product of its (nonzero) digits is 6000, while the sum is 26.

The square root of 520535042 is about 22815.2370577209. The cubic root of 520535042 is about 804.4208593773.

The spelling of 520535042 in words is "five hundred twenty million, five hundred thirty-five thousand, forty-two".