521434120 has 32 divisors (see below), whose sum is σ = 1180267200. Its totient is φ = 207322048.

The previous prime is 521434117. The next prime is 521434139. The reversal of 521434120 is 21434125.

It is a junction number, because it is equal to n+sod(n) for n = 521434091 and 521434100.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32350 + ... + 45709.

It is an arithmetic number, because the mean of its divisors is an integer number (36883350).

Almost surely, 2^521434120 is an apocalyptic number.

It is an amenable number.

521434120 is an abundant number, since it is smaller than the sum of its proper divisors (658833080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

521434120 is a wasteful number, since it uses less digits than its factorization.

521434120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78237 (or 78233 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 521434120 is about 22834.9320121607. The cubic root of 521434120 is about 804.8837299764.

Adding to 521434120 its reverse (21434125), we get a palindrome (542868245).

The spelling of 521434120 in words is "five hundred twenty-one million, four hundred thirty-four thousand, one hundred twenty".