121979675 has 18 divisors (see below), whose sum is σ = 160685028. Its totient is φ = 91838080.

The previous prime is 121979657. The next prime is 121979717. The reversal of 121979675 is 576979121.

It is not a de Polignac number, because 121979675 - 2²⁶ = 54870811 is a prime.

It is a super-2 number, since 2×121979675² = 29758082226211250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1217 + ... + 15666.

It is an arithmetic number, because the mean of its divisors is an integer number (8926946).

Almost surely, 2^121979675 is an apocalyptic number.

121979675 is a deficient number, since it is larger than the sum of its proper divisors (38705353).

121979675 is a wasteful number, since it uses less digits than its factorization.

121979675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16927 (or 16905 counting only the distinct ones).

The product of its digits is 238140, while the sum is 47.

The square root of 121979675 is about 11044.4409093444. The cubic root of 121979675 is about 495.9400223934.

The spelling of 121979675 in words is "one hundred twenty-one million, nine hundred seventy-nine thousand, six hundred seventy-five".