121979304 has 128 divisors (see below), whose sum is σ = 362419200. Its totient is φ = 37920960.

The previous prime is 121979303. The next prime is 121979323. The reversal of 121979304 is 403979121.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (121979303) 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 31 ways as a sum of consecutive naturals, for example, 213339 + ... + 213909.

It is an arithmetic number, because the mean of its divisors is an integer number (2831400).

Almost surely, 2^121979304 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121979304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181209600).

121979304 is an abundant number, since it is smaller than the sum of its proper divisors (240439896).

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

121979304 is a wasteful number, since it uses less digits than its factorization.

121979304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652 (or 642 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 121979304 is about 11044.4241135516. The cubic root of 121979304 is about 495.9395195940.

The spelling of 121979304 in words is "one hundred twenty-one million, nine hundred seventy-nine thousand, three hundred four".