520004000120 has 96 divisors (see below), whose sum is σ = 1293229702800. Its totient is φ = 188035668480.

The previous prime is 520004000107. The next prime is 520004000123. The reversal of 520004000120 is 21000400025.

It is a junction number, because it is equal to n+sod(n) for n = 520004000095 and 520004000104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520004000123) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 566252 + ... + 1166468.

Almost surely, 2^520004000120 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 520004000120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (646614851400).

520004000120 is an abundant number, since it is smaller than the sum of its proper divisors (773225702680).

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

520004000120 is a wasteful number, since it uses less digits than its factorization.

520004000120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600429 (or 600414 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

Adding to 520004000120 its reverse (21000400025), we get a palindrome (541004400145).

The spelling of 520004000120 in words is "five hundred twenty billion, four million, one hundred twenty", and thus it is an aban number.