121684672 has 28 divisors (see below), whose sum is σ = 249261376. Its totient is φ = 58878720.

The previous prime is 121684637. The next prime is 121684687. The reversal of 121684672 is 276486121.

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, 28683 + ... + 32650.

It is an arithmetic number, because the mean of its divisors is an integer number (8902192).

Almost surely, 2^121684672 is an apocalyptic number.

It is an amenable number.

121684672 is an abundant number, since it is smaller than the sum of its proper divisors (127576704).

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

121684672 is an equidigital number, since it uses as much as digits as its factorization.

121684672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61376 (or 61366 counting only the distinct ones).

The product of its digits is 32256, while the sum is 37.

The square root of 121684672 is about 11031.0775538929. The cubic root of 121684672 is about 495.5398959066.

The spelling of 121684672 in words is "one hundred twenty-one million, six hundred eighty-four thousand, six hundred seventy-two".