121324928 has 16 divisors (see below), whose sum is σ = 241702260. Its totient is φ = 60662400.

The previous prime is 121324901. The next prime is 121324933. The reversal of 121324928 is 829423121.

It is a tau number, because it is divible by the number of its divisors (16).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 121324894 and 121324903.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 473798 + ... + 474053.

Almost surely, 2^121324928 is an apocalyptic number.

It is an amenable number.

121324928 is a deficient number, since it is larger than the sum of its proper divisors (120377332).

121324928 is an frugal number, since it uses more digits than its factorization.

121324928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947865 (or 947853 counting only the distinct ones).

The product of its digits is 6912, while the sum is 32.

The square root of 121324928 is about 11014.7595525277. The cubic root of 121324928 is about 495.0510820324.

The spelling of 121324928 in words is "one hundred twenty-one million, three hundred twenty-four thousand, nine hundred twenty-eight".