520515342 has 64 divisors (see below), whose sum is σ = 1183334400. Its totient is φ = 169555680.

The previous prime is 520515329. The next prime is 520515419. The reversal of 520515342 is 243515025.

It is a happy number.

520515342 is a `hidden beast` number, since 520 + 51 + 53 + 42 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 486384 + ... + 487452.

It is an arithmetic number, because the mean of its divisors is an integer number (18489600).

Almost surely, 2^520515342 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 520515342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (591667200).

520515342 is an abundant number, since it is smaller than the sum of its proper divisors (662819058).

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

520515342 is a wasteful number, since it uses less digits than its factorization.

520515342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1278 (or 1272 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 520515342 is about 22814.8053246132. The cubic root of 520515342 is about 804.4107112992.

The spelling of 520515342 in words is "five hundred twenty million, five hundred fifteen thousand, three hundred forty-two".