121774928 has 20 divisors (see below), whose sum is σ = 257388288. Its totient is φ = 55352160.

The previous prime is 121774921. The next prime is 121774937. The reversal of 121774928 is 829477121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121774921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 345776 + ... + 346127.

Almost surely, 2^121774928 is an apocalyptic number.

It is an amenable number.

121774928 is an abundant number, since it is smaller than the sum of its proper divisors (135613360).

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

121774928 is a wasteful number, since it uses less digits than its factorization.

121774928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691922 (or 691916 counting only the distinct ones).

The product of its digits is 56448, while the sum is 41.

The square root of 121774928 is about 11035.1677830471. The cubic root of 121774928 is about 495.6623829730.

The spelling of 121774928 in words is "one hundred twenty-one million, seven hundred seventy-four thousand, nine hundred twenty-eight".