520242240 has 112 divisors (see below), whose sum is σ = 1887760512. Its totient is φ = 118910976.

The previous prime is 520242227. The next prime is 520242269. The reversal of 520242240 is 42242025.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 31989 + ... + 45428.

Almost surely, 2^520242240 is an apocalyptic number.

It is an amenable number.

520242240 is an abundant number, since it is smaller than the sum of its proper divisors (1367518272).

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

520242240 is a wasteful number, since it uses less digits than its factorization.

520242240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77444 (or 77434 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 520242240 is about 22808.8193469105. The cubic root of 520242240 is about 804.2700016416.

Adding to 520242240 its reverse (42242025), we get a palindrome (562484265).

The spelling of 520242240 in words is "five hundred twenty million, two hundred forty-two thousand, two hundred forty".