121255788 has 24 divisors (see below), whose sum is σ = 286917120. Its totient is φ = 39849040.

The previous prime is 121255769. The next prime is 121255801. The reversal of 121255788 is 887552121.

It is a super-2 number, since 2×121255788² = 29405932247001888, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70308 + ... + 72011.

It is an arithmetic number, because the mean of its divisors is an integer number (11954880).

Almost surely, 2^121255788 is an apocalyptic number.

It is an amenable number.

121255788 is an abundant number, since it is smaller than the sum of its proper divisors (165661332).

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

121255788 is a wasteful number, since it uses less digits than its factorization.

121255788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142397 (or 142395 counting only the distinct ones).

The product of its digits is 44800, while the sum is 39.

The square root of 121255788 is about 11011.6205891776. The cubic root of 121255788 is about 494.9570251437.

The spelling of 121255788 in words is "one hundred twenty-one million, two hundred fifty-five thousand, seven hundred eighty-eight".