121972732 has 12 divisors (see below), whose sum is σ = 243945520. Its totient is φ = 52274016.

The previous prime is 121972727. The next prime is 121972759. The reversal of 121972732 is 237279121.

121972732 is an admirable number.

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, 2178057 + ... + 2178112.

Almost surely, 2^121972732 is an apocalyptic number.

It is an amenable number.

121972732 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

121972732 is a wasteful number, since it uses less digits than its factorization.

121972732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4356180 (or 4356178 counting only the distinct ones).

The product of its digits is 10584, while the sum is 34.

The square root of 121972732 is about 11044.1265838454. The cubic root of 121972732 is about 495.9306126921.

The spelling of 121972732 in words is "one hundred twenty-one million, nine hundred seventy-two thousand, seven hundred thirty-two".