121929664 has 28 divisors (see below), whose sum is σ = 242608608. Its totient is φ = 60800000.

The previous prime is 121929641. The next prime is 121929697. The reversal of 121929664 is 466929121.

It is a congruent number.

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, 23289 + ... + 28039.

Almost surely, 2^121929664 is an apocalyptic number.

It is an amenable number.

121929664 is a deficient number, since it is larger than the sum of its proper divisors (120678944).

121929664 is an equidigital number, since it uses as much as digits as its factorization.

121929664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5164 (or 5154 counting only the distinct ones).

The product of its digits is 46656, while the sum is 40.

The square root of 121929664 is about 11042.1765970301. The cubic root of 121929664 is about 495.8722355624.

The spelling of 121929664 in words is "one hundred twenty-one million, nine hundred twenty-nine thousand, six hundred sixty-four".