15015420442 has 32 divisors (see below), whose sum is σ = 26046256320. Its totient is φ = 6416244480.

The previous prime is 15015420437. The next prime is 15015420461. The reversal of 15015420442 is 24402451051.

It is a self number, because there is not a number n which added to its sum of digits gives 15015420442.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 305109 + ... + 350887.

It is an arithmetic number, because the mean of its divisors is an integer number (813945510).

Almost surely, 2^15015420442 is an apocalyptic number.

15015420442 is a deficient number, since it is larger than the sum of its proper divisors (11030835878).

15015420442 is a wasteful number, since it uses less digits than its factorization.

15015420442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46686.

The product of its (nonzero) digits is 6400, while the sum is 28.

Adding to 15015420442 its reverse (24402451051), we get a palindrome (39417871493).

The spelling of 15015420442 in words is "fifteen billion, fifteen million, four hundred twenty thousand, four hundred forty-two".