520139042524 has 48 divisors (see below), whose sum is σ = 924097011712. Its totient is φ = 256144254912.

The previous prime is 520139042503. The next prime is 520139042531. The reversal of 520139042524 is 425240931025.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115404679 + ... + 115409185.

Almost surely, 2^520139042524 is an apocalyptic number.

It is an amenable number.

520139042524 is a deficient number, since it is larger than the sum of its proper divisors (403957969188).

520139042524 is a wasteful number, since it uses less digits than its factorization.

520139042524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6242 (or 6240 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

Adding to 520139042524 its reverse (425240931025), we get a palindrome (945379973549).

The spelling of 520139042524 in words is "five hundred twenty billion, one hundred thirty-nine million, forty-two thousand, five hundred twenty-four".