121409192 has 16 divisors (see below), whose sum is σ = 227784960. Its totient is φ = 60666544.

The previous prime is 121409191. The next prime is 121409209. The reversal of 121409192 is 291904121.

It is not an unprimeable number, because it can be changed into a prime (121409191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12473 + ... + 19959.

It is an arithmetic number, because the mean of its divisors is an integer number (14236560).

Almost surely, 2^121409192 is an apocalyptic number.

It is an amenable number.

121409192 is a deficient number, since it is larger than the sum of its proper divisors (106375768).

121409192 is a wasteful number, since it uses less digits than its factorization.

121409192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9520 (or 9516 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 121409192 is about 11018.5839380567. The cubic root of 121409192 is about 495.1656650543.

The spelling of 121409192 in words is "one hundred twenty-one million, four hundred nine thousand, one hundred ninety-two".