520305442 has 16 divisors (see below), whose sum is σ = 785473920. Its totient is φ = 258486768.

The previous prime is 520305431. The next prime is 520305479. The reversal of 520305442 is 244503025.

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, 224184 + ... + 226492.

It is an arithmetic number, because the mean of its divisors is an integer number (49092120).

Almost surely, 2^520305442 is an apocalyptic number.

520305442 is a deficient number, since it is larger than the sum of its proper divisors (265168478).

520305442 is a wasteful number, since it uses less digits than its factorization.

520305442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2985.

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 520305442 is about 22810.2047776867. The cubic root of 520305442 is about 804.3025694279.

Adding to 520305442 its reverse (244503025), we get a palindrome (764808467).

The spelling of 520305442 in words is "five hundred twenty million, three hundred five thousand, four hundred forty-two".