15421042102120 has 64 divisors (see below), whose sum is σ = 34876347408000. Its totient is φ = 6136602405120.

The previous prime is 15421042102097. The next prime is 15421042102127. The reversal of 15421042102120 is 2120124012451.

It is not an unprimeable number, because it can be changed into a prime (15421042102127) 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, 61493227 + ... + 61743493.

It is an arithmetic number, because the mean of its divisors is an integer number (544942928250).

Almost surely, 2^{15421042102120} is an apocalyptic number.

15421042102120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15421042102120 is an abundant number, since it is smaller than the sum of its proper divisors (19455305305880).

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

15421042102120 is a wasteful number, since it uses less digits than its factorization.

15421042102120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258218 (or 258214 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 25.

Adding to 15421042102120 its reverse (2120124012451), we get a palindrome (17541166114571).

The spelling of 15421042102120 in words is "fifteen trillion, four hundred twenty-one billion, forty-two million, one hundred two thousand, one hundred twenty".