121057872 has 40 divisors (see below), whose sum is σ = 336790944. Its totient is φ = 37248384.

The previous prime is 121057841. The next prime is 121057897. The reversal of 121057872 is 278750121.

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, 96378 + ... + 97625.

Almost surely, 2^121057872 is an apocalyptic number.

121057872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121057872 is an abundant number, since it is smaller than the sum of its proper divisors (215733072).

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

121057872 is a wasteful number, since it uses less digits than its factorization.

121057872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194027 (or 194021 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 33.

The square root of 121057872 is about 11002.6302309948. The cubic root of 121057872 is about 494.6875857437.

The spelling of 121057872 in words is "one hundred twenty-one million, fifty-seven thousand, eight hundred seventy-two".