120691992 has 32 divisors (see below), whose sum is σ = 302024880. Its totient is φ = 40191360.

The previous prime is 120691981. The next prime is 120692051. The reversal of 120691992 is 299196021.

It is a self number, because there is not a number n which added to its sum of digits gives 120691992.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33142 + ... + 36602.

Almost surely, 2^120691992 is an apocalyptic number.

120691992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

120691992 is an abundant number, since it is smaller than the sum of its proper divisors (181332888).

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

120691992 is a wasteful number, since it uses less digits than its factorization.

120691992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4923 (or 4919 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 39.

The square root of 120691992 is about 10985.9907154521. The cubic root of 120691992 is about 494.1887087940.

The spelling of 120691992 in words is "one hundred twenty million, six hundred ninety-one thousand, nine hundred ninety-two".