520075642 has 4 divisors (see below), whose sum is σ = 780113466. Its totient is φ = 260037820.

The previous prime is 520075631. The next prime is 520075667. The reversal of 520075642 is 246570025.

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., 303073281 + 217002361 = 17409^2 + 14731^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130018909 + ... + 130018912.

Almost surely, 2^520075642 is an apocalyptic number.

520075642 is a deficient number, since it is larger than the sum of its proper divisors (260037824).

520075642 is a wasteful number, since it uses less digits than its factorization.

520075642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260037823.

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 520075642 is about 22805.1670022388. The cubic root of 520075642 is about 804.1841415886.

The spelling of 520075642 in words is "five hundred twenty million, seventy-five thousand, six hundred forty-two".