121399124 has 24 divisors (see below), whose sum is σ = 264871488. Its totient is φ = 47298240.

The previous prime is 121399111. The next prime is 121399153. The reversal of 121399124 is 421993121.

It is a congruent number.

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, 196769 + ... + 197384.

It is an arithmetic number, because the mean of its divisors is an integer number (11036312).

Almost surely, 2^121399124 is an apocalyptic number.

121399124 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

121399124 is an abundant number, since it is smaller than the sum of its proper divisors (143472364).

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

121399124 is a wasteful number, since it uses less digits than its factorization.

121399124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394175 (or 394173 counting only the distinct ones).

The product of its digits is 3888, while the sum is 32.

The square root of 121399124 is about 11018.1270640704. The cubic root of 121399124 is about 495.1519772776.

The spelling of 121399124 in words is "one hundred twenty-one million, three hundred ninety-nine thousand, one hundred twenty-four".