121928192 has 20 divisors (see below), whose sum is σ = 243619266. Its totient is φ = 60963840.

The previous prime is 121928171. The next prime is 121928197. The reversal of 121928192 is 291829121.

It can be written as a sum of positive squares in only one way, i.e., 74373376 + 47554816 = 8624^2 + 6896^2 .

It is not an unprimeable number, because it can be changed into a prime (121928197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 118559 + ... + 119582.

Almost surely, 2^121928192 is an apocalyptic number.

It is an amenable number.

121928192 is a deficient number, since it is larger than the sum of its proper divisors (121691074).

121928192 is an frugal number, since it uses more digits than its factorization.

121928192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238159 (or 238143 counting only the distinct ones).

The product of its digits is 5184, while the sum is 35.

The square root of 121928192 is about 11042.1099433034. The cubic root of 121928192 is about 495.8702400762.

The spelling of 121928192 in words is "one hundred twenty-one million, nine hundred twenty-eight thousand, one hundred ninety-two".