121979404 has 6 divisors (see below), whose sum is σ = 213463964. Its totient is φ = 60989700.

The previous prime is 121979401. The next prime is 121979413. The reversal of 121979404 is 404979121.

It is not an unprimeable number, because it can be changed into a prime (121979401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15247422 + ... + 15247429.

Almost surely, 2^121979404 is an apocalyptic number.

It is an amenable number.

121979404 is a deficient number, since it is larger than the sum of its proper divisors (91484560).

121979404 is a wasteful number, since it uses less digits than its factorization.

121979404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30494855 (or 30494853 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 121979404 is about 11044.4286407220. The cubic root of 121979404 is about 495.9396551195.

The spelling of 121979404 in words is "one hundred twenty-one million, nine hundred seventy-nine thousand, four hundred four".