121928132 has 6 divisors (see below), whose sum is σ = 213374238. Its totient is φ = 60964064.

The previous prime is 121928123. The next prime is 121928171. The reversal of 121928132 is 231829121.

It can be written as a sum of positive squares in only one way, i.e., 95570176 + 26357956 = 9776^2 + 5134^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121928095 and 121928104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15241013 + ... + 15241020.

It is an arithmetic number, because the mean of its divisors is an integer number (35562373).

Almost surely, 2^121928132 is an apocalyptic number.

It is an amenable number.

121928132 is a deficient number, since it is larger than the sum of its proper divisors (91446106).

121928132 is a wasteful number, since it uses less digits than its factorization.

121928132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30482037 (or 30482035 counting only the distinct ones).

The product of its digits is 1728, while the sum is 29.

The square root of 121928132 is about 11042.1072264310. The cubic root of 121928132 is about 495.8701587381.

The spelling of 121928132 in words is "one hundred twenty-one million, nine hundred twenty-eight thousand, one hundred thirty-two".