520531042 has 4 divisors (see below), whose sum is σ = 780796566. Its totient is φ = 260265520.

The previous prime is 520531027. The next prime is 520531093. The reversal of 520531042 is 240135025.

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., 508006521 + 12524521 = 22539^2 + 3539^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130132759 + ... + 130132762.

Almost surely, 2^520531042 is an apocalyptic number.

520531042 is a deficient number, since it is larger than the sum of its proper divisors (260265524).

520531042 is a wasteful number, since it uses less digits than its factorization.

520531042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260265523.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 520531042 is about 22815.1493968372. The cubic root of 520531042 is about 804.4187988745.

Adding to 520531042 its reverse (240135025), we get a palindrome (760666067).

The spelling of 520531042 in words is "five hundred twenty million, five hundred thirty-one thousand, forty-two".