120811992 has 32 divisors (see below), whose sum is σ = 345177600. Its totient is φ = 34517664.

The previous prime is 120811973. The next prime is 120811997. The reversal of 120811992 is 299118021.

It is a super-2 number, since 2×120811992² = 29191074822016128, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120811997) 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, 359392 + ... + 359727.

It is an arithmetic number, because the mean of its divisors is an integer number (10786800).

Almost surely, 2^120811992 is an apocalyptic number.

120811992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

120811992 is an abundant number, since it is smaller than the sum of its proper divisors (224365608).

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

120811992 is a wasteful number, since it uses less digits than its factorization.

120811992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719135 (or 719131 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 33.

The square root of 120811992 is about 10991.4508596454. The cubic root of 120811992 is about 494.3524396285.

The spelling of 120811992 in words is "one hundred twenty million, eight hundred eleven thousand, nine hundred ninety-two".