15120442404 has 72 divisors (see below), whose sum is σ = 38797321472. Its totient is φ = 4964353920.

The previous prime is 15120442391. The next prime is 15120442411. The reversal of 15120442404 is 40424402151.

15120442404 is a `hidden beast` number, since 1 + 51 + 204 + 4 + 2 + 404 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2159349 + ... + 2166339.

Almost surely, 2^15120442404 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 15120442404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19398660736).

15120442404 is an abundant number, since it is smaller than the sum of its proper divisors (23676879068).

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

15120442404 is a wasteful number, since it uses less digits than its factorization.

15120442404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7897 (or 7892 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

Adding to 15120442404 its reverse (40424402151), we get a palindrome (55544844555).

The spelling of 15120442404 in words is "fifteen billion, one hundred twenty million, four hundred forty-two thousand, four hundred four".