5121139924 has 18 divisors (see below), whose sum is σ = 9076918074. Its totient is φ = 2528145360.

The previous prime is 5121139913. The next prime is 5121139931. The reversal of 5121139924 is 4299311215.

It can be written as a sum of positive squares in only one way, i.e., 3510562500 + 1610577424 = 59250^2 + 40132^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 77607 + ... + 127534.

Almost surely, 2^5121139924 is an apocalyptic number.

It is an amenable number.

5121139924 is a deficient number, since it is larger than the sum of its proper divisors (3955778150).

5121139924 is a wasteful number, since it uses less digits than its factorization.

5121139924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205303 (or 205222 counting only the distinct ones).

The product of its digits is 19440, while the sum is 37.

The square root of 5121139924 is about 71562.1402977860. The cubic root of 5121139924 is about 1723.6756535657.

The spelling of 5121139924 in words is "five billion, one hundred twenty-one million, one hundred thirty-nine thousand, nine hundred twenty-four".