120921309392 has 40 divisors (see below), whose sum is σ = 252382882920. Its totient is φ = 55793041920.

The previous prime is 120921309391. The next prime is 120921309403. The reversal of 120921309392 is 293903129021.

It can be written as a sum of positive squares in 4 ways, for example, as 14295550096 + 106625759296 = 119564^2 + 326536^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120921309391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 619142 + ... + 790682.

It is an arithmetic number, because the mean of its divisors is an integer number (6309572073).

Almost surely, 2^120921309392 is an apocalyptic number.

It is an amenable number.

120921309392 is an abundant number, since it is smaller than the sum of its proper divisors (131461573528).

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

120921309392 is a wasteful number, since it uses less digits than its factorization.

120921309392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174951 (or 174945 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 41.

The spelling of 120921309392 in words is "one hundred twenty billion, nine hundred twenty-one million, three hundred nine thousand, three hundred ninety-two".