520042120052 has 72 divisors (see below), whose sum is σ = 1131964073856. Its totient is φ = 204686262144.

The previous prime is 520042120051. The next prime is 520042120093. The reversal of 520042120052 is 250021240025.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520042120051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 653273 + ... + 1211135.

It is an arithmetic number, because the mean of its divisors is an integer number (15721723248).

Almost surely, 2^520042120052 is an apocalyptic number.

520042120052 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 520042120052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (565982036928).

520042120052 is an abundant number, since it is smaller than the sum of its proper divisors (611921953804).

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

520042120052 is a wasteful number, since it uses less digits than its factorization.

520042120052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558097 (or 558082 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

Adding to 520042120052 its reverse (250021240025), we get a palindrome (770063360077).

The spelling of 520042120052 in words is "five hundred twenty billion, forty-two million, one hundred twenty thousand, fifty-two".