121797392 has 20 divisors (see below), whose sum is σ = 240436620. Its totient is φ = 59749248.

The previous prime is 121797383. The next prime is 121797407. The reversal of 121797392 is 293797121.

It can be written as a sum of positive squares in 2 ways, for example, as 88435216 + 33362176 = 9404^2 + 5776^2 .

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

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, 70967 + ... + 72662.

It is an arithmetic number, because the mean of its divisors is an integer number (12021831).

Almost surely, 2^121797392 is an apocalyptic number.

It is an amenable number.

121797392 is a deficient number, since it is larger than the sum of its proper divisors (118639228).

121797392 is a wasteful number, since it uses less digits than its factorization.

121797392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143690 (or 143684 counting only the distinct ones).

The product of its digits is 47628, while the sum is 41.

The square root of 121797392 is about 11036.1855729233. The cubic root of 121797392 is about 495.6928596218.

The spelling of 121797392 in words is "one hundred twenty-one million, seven hundred ninety-seven thousand, three hundred ninety-two".