121493924 has 6 divisors (see below), whose sum is σ = 212614374. Its totient is φ = 60746960.

The previous prime is 121493909. The next prime is 121493941. The reversal of 121493924 is 429394121.

It can be written as a sum of positive squares in only one way, i.e., 95687524 + 25806400 = 9782^2 + 5080^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15186737 + ... + 15186744.

It is an arithmetic number, because the mean of its divisors is an integer number (35435729).

Almost surely, 2^121493924 is an apocalyptic number.

It is an amenable number.

121493924 is a deficient number, since it is larger than the sum of its proper divisors (91120450).

121493924 is a wasteful number, since it uses less digits than its factorization.

121493924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30373485 (or 30373483 counting only the distinct ones).

The product of its digits is 15552, while the sum is 35.

The square root of 121493924 is about 11022.4282261215. The cubic root of 121493924 is about 495.2808310196.

The spelling of 121493924 in words is "one hundred twenty-one million, four hundred ninety-three thousand, nine hundred twenty-four".