121440979 has 12 divisors (see below), whose sum is σ = 140736168. Its totient is φ = 103904000.

The previous prime is 121440973. The next prime is 121441003. The reversal of 121440979 is 979044121.

It is not a de Polignac number, because 121440979 - 2³ = 121440971 is a prime.

It is a super-2 number, since 2×121440979² = 29495822760956882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121440971) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15922 + ... + 22279.

It is an arithmetic number, because the mean of its divisors is an integer number (11728014).

Almost surely, 2^121440979 is an apocalyptic number.

121440979 is a deficient number, since it is larger than the sum of its proper divisors (19295189).

121440979 is a wasteful number, since it uses less digits than its factorization.

121440979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38246 (or 38229 counting only the distinct ones).

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

The square root of 121440979 is about 11020.0262703861. The cubic root of 121440979 is about 495.2088755594.

The spelling of 121440979 in words is "one hundred twenty-one million, four hundred forty thousand, nine hundred seventy-nine".