120391880 has 32 divisors (see below), whose sum is σ = 309579840. Its totient is φ = 41277120.

The previous prime is 120391871. The next prime is 120391883. The reversal of 120391880 is 88193021.

It is not an unprimeable number, because it can be changed into a prime (120391883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214706 + ... + 215265.

It is an arithmetic number, because the mean of its divisors is an integer number (9674370).

Almost surely, 2^120391880 is an apocalyptic number.

120391880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120391880 is an abundant number, since it is smaller than the sum of its proper divisors (189187960).

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

120391880 is a wasteful number, since it uses less digits than its factorization.

120391880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429989 (or 429985 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 120391880 is about 10972.3233638095. The cubic root of 120391880 is about 493.7787532259.

The spelling of 120391880 in words is "one hundred twenty million, three hundred ninety-one thousand, eight hundred eighty".