5123939920 has 80 divisors (see below), whose sum is σ = 13079305728. Its totient is φ = 1851333120.

The previous prime is 5123939917. The next prime is 5123939929. The reversal of 5123939920 is 299393215.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5123939929) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119617 + ... + 156703.

Almost surely, 2^5123939920 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 5123939920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6539652864).

5123939920 is an abundant number, since it is smaller than the sum of its proper divisors (7955365808).

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

5123939920 is a wasteful number, since it uses less digits than its factorization.

5123939920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37268 (or 37262 counting only the distinct ones).

The product of its (nonzero) digits is 131220, while the sum is 43.

The square root of 5123939920 is about 71581.7010135970. The cubic root of 5123939920 is about 1723.9897376485.

The spelling of 5123939920 in words is "five billion, one hundred twenty-three million, nine hundred thirty-nine thousand, nine hundred twenty".