120979 has 4 divisors (see below), whose sum is σ = 121680. Its totient is φ = 120280.

The previous prime is 120977. The next prime is 120997. The reversal of 120979 is 979021.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 979021 = 97 ⋅10093.

It is a cyclic number.

It is not a de Polignac number, because 120979 - 2¹ = 120977 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117 + ... + 505.

It is an arithmetic number, because the mean of its divisors is an integer number (30420).

2¹²⁰⁹⁷⁹ is an apocalyptic number.

120979 is a deficient number, since it is larger than the sum of its proper divisors (701).

120979 is an equidigital number, since it uses as much as digits as its factorization.

120979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700.

The product of its (nonzero) digits is 1134, while the sum is 28.

The square root of 120979 is about 347.8203559310. The cubic root of 120979 is about 49.4580128940.

The spelling of 120979 in words is "one hundred twenty thousand, nine hundred seventy-nine".