120781975 has 12 divisors (see below), whose sum is σ = 151316704. Its totient is φ = 95627520.

The previous prime is 120781967. The next prime is 120781979. The reversal of 120781975 is 579187021.

It is not a de Polignac number, because 120781975 - 2³ = 120781967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120781979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22479 + ... + 27328.

Almost surely, 2^120781975 is an apocalyptic number.

120781975 is a deficient number, since it is larger than the sum of its proper divisors (30534729).

120781975 is an equidigital number, since it uses as much as digits as its factorization.

120781975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49914 (or 49909 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 40.

The square root of 120781975 is about 10990.0853044915. The cubic root of 120781975 is about 494.3114938966.

The spelling of 120781975 in words is "one hundred twenty million, seven hundred eighty-one thousand, nine hundred seventy-five".