520531142 has 4 divisors (see below), whose sum is σ = 780796716. Its totient is φ = 260265570.

The previous prime is 520531129. The next prime is 520531171. The reversal of 520531142 is 241135025.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130132784 + ... + 130132787.

It is an arithmetic number, because the mean of its divisors is an integer number (195199179).

Almost surely, 2^520531142 is an apocalyptic number.

520531142 is a deficient number, since it is larger than the sum of its proper divisors (260265574).

520531142 is a wasteful number, since it uses less digits than its factorization.

520531142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260265573.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 520531142 is about 22815.1515883634. The cubic root of 520531142 is about 804.4188503872.

Adding to 520531142 its reverse (241135025), we get a palindrome (761666167).

The spelling of 520531142 in words is "five hundred twenty million, five hundred thirty-one thousand, one hundred forty-two".