15120444042 has 64 divisors (see below), whose sum is σ = 36674467200. Its totient is φ = 4579597440.

The previous prime is 15120444037. The next prime is 15120444089. The reversal of 15120444042 is 24044402151.

15120444042 is a `hidden beast` number, since 1 + 51 + 204 + 4 + 404 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 15120443997 and 15120444015.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1406584 + ... + 1417292.

It is an arithmetic number, because the mean of its divisors is an integer number (573038550).

Almost surely, 2^15120444042 is an apocalyptic number.

15120444042 is an abundant number, since it is smaller than the sum of its proper divisors (21554023158).

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

15120444042 is a wasteful number, since it uses less digits than its factorization.

15120444042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13108 (or 13102 counting only the distinct ones).

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

Adding to 15120444042 its reverse (24044402151), we get a palindrome (39164846193).

The spelling of 15120444042 in words is "fifteen billion, one hundred twenty million, four hundred forty-four thousand, forty-two".