121747976 has 16 divisors (see below), whose sum is σ = 260888640. Its totient is φ = 52177680.

The previous prime is 121747961. The next prime is 121747979. The reversal of 121747976 is 679747121.

It is not an unprimeable number, because it can be changed into a prime (121747979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1086980 + ... + 1087091.

It is an arithmetic number, because the mean of its divisors is an integer number (16305540).

Almost surely, 2^121747976 is an apocalyptic number.

It is an amenable number.

121747976 is an abundant number, since it is smaller than the sum of its proper divisors (139140664).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121747976 is a wasteful number, since it uses less digits than its factorization.

121747976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2174084 (or 2174080 counting only the distinct ones).

The product of its digits is 148176, while the sum is 44.

The square root of 121747976 is about 11033.9465287811. The cubic root of 121747976 is about 495.6258125599.

The spelling of 121747976 in words is "one hundred twenty-one million, seven hundred forty-seven thousand, nine hundred seventy-six".