520346442 has 64 divisors (see below), whose sum is σ = 1306368000. Its totient is φ = 134230080.

The previous prime is 520346423. The next prime is 520346443. The reversal of 520346442 is 244643025.

It is not an unprimeable number, because it can be changed into a prime (520346443) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65059 + ... + 72617.

It is an arithmetic number, because the mean of its divisors is an integer number (20412000).

Almost surely, 2^520346442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 520346442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (653184000).

520346442 is an abundant number, since it is smaller than the sum of its proper divisors (786021558).

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

520346442 is a wasteful number, since it uses less digits than its factorization.

520346442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7731.

The product of its (nonzero) digits is 23040, while the sum is 30.

The square root of 520346442 is about 22811.1034805421. The cubic root of 520346442 is about 804.3236951850.

Adding to 520346442 its reverse (244643025), we get a palindrome (764989467).

The spelling of 520346442 in words is "five hundred twenty million, three hundred forty-six thousand, four hundred forty-two".