7421302225128 has 128 divisors (see below), whose sum is σ = 21132984499200. Its totient is φ = 2149770585600.

The previous prime is 7421302225109. The next prime is 7421302225133. The reversal of 7421302225128 is 8215222031247.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9453108 + ... + 10208028.

It is an arithmetic number, because the mean of its divisors is an integer number (165101441400).

Almost surely, 2^{7421302225128} 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 7421302225128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10566492249600).

7421302225128 is an abundant number, since it is smaller than the sum of its proper divisors (13711682274072).

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

7421302225128 is a wasteful number, since it uses less digits than its factorization.

7421302225128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756583 (or 756579 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 39.

The spelling of 7421302225128 in words is "seven trillion, four hundred twenty-one billion, three hundred two million, two hundred twenty-five thousand, one hundred twenty-eight".