520424540240 has 160 divisors (see below), whose sum is σ = 1347566785920. Its totient is φ = 185318553600.

The previous prime is 520424540231. The next prime is 520424540249. The reversal of 520424540240 is 42045424025.

It is an interprime number because it is at equal distance from previous prime (520424540231) and next prime (520424540249).

It is a junction number, because it is equal to n+sod(n) for n = 520424540197 and 520424540206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520424540249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12164006 + ... + 12206714.

It is an arithmetic number, because the mean of its divisors is an integer number (8422292412).

Almost surely, 2^520424540240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 520424540240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (673783392960).

520424540240 is an abundant number, since it is smaller than the sum of its proper divisors (827142245680).

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

520424540240 is a wasteful number, since it uses less digits than its factorization.

520424540240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43021 (or 43015 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 32.

Adding to 520424540240 its reverse (42045424025), we get a palindrome (562469964265).

The spelling of 520424540240 in words is "five hundred twenty billion, four hundred twenty-four million, five hundred forty thousand, two hundred forty".