121554764 has 12 divisors (see below), whose sum is σ = 212848944. Its totient is φ = 60740784.

The previous prime is 121554749. The next prime is 121554781. The reversal of 121554764 is 467455121.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 839 + ... + 15614.

It is an arithmetic number, because the mean of its divisors is an integer number (17737412).

Almost surely, 2^121554764 is an apocalyptic number.

It is an amenable number.

121554764 is a deficient number, since it is larger than the sum of its proper divisors (91294180).

121554764 is a wasteful number, since it uses less digits than its factorization.

121554764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18304 (or 18302 counting only the distinct ones).

The product of its digits is 33600, while the sum is 35.

The square root of 121554764 is about 11025.1877081526. The cubic root of 121554764 is about 495.3634904546.

The spelling of 121554764 in words is "one hundred twenty-one million, five hundred fifty-four thousand, seven hundred sixty-four".