9902120 has 16 divisors (see below), whose sum is σ = 22279860. Its totient is φ = 3960832.

The previous prime is 9902119. The next prime is 9902153. The reversal of 9902120 is 212099.

It can be written as a sum of positive squares in 2 ways, for example, as 9746884 + 155236 = 3122^2 + 394^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123737 + ... + 123816.

Almost surely, 2^9902120 is an apocalyptic number.

It is an amenable number.

9902120 is an abundant number, since it is smaller than the sum of its proper divisors (12377740).

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

9902120 is a wasteful number, since it uses less digits than its factorization.

9902120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247564 (or 247560 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 9902120 is about 3146.7634165917. The cubic root of 9902120 is about 214.7382428310.

The spelling of 9902120 in words is "nine million, nine hundred two thousand, one hundred twenty".