121868923 has 16 divisors (see below), whose sum is σ = 137440512. Its totient is φ = 107100000.

The previous prime is 121868909. The next prime is 121868939. The reversal of 121868923 is 329868121.

It is a cyclic number.

It is not a de Polignac number, because 121868923 - 2⁵ = 121868891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121868623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46498 + ... + 49048.

It is an arithmetic number, because the mean of its divisors is an integer number (8590032).

Almost surely, 2^121868923 is an apocalyptic number.

121868923 is a deficient number, since it is larger than the sum of its proper divisors (15571589).

121868923 is a wasteful number, since it uses less digits than its factorization.

121868923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2706.

The product of its digits is 41472, while the sum is 40.

The square root of 121868923 is about 11039.4258455773. The cubic root of 121868923 is about 495.7898799447.

The spelling of 121868923 in words is "one hundred twenty-one million, eight hundred sixty-eight thousand, nine hundred twenty-three".