12120959 has 4 divisors (see below), whose sum is σ = 12128280. Its totient is φ = 12113640.

The previous prime is 12120947. The next prime is 12120967. The reversal of 12120959 is 95902121.

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.

It is a cyclic number.

It is not a de Polignac number, because 12120959 - 2¹⁶ = 12055423 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 (12120919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137 + ... + 4925.

It is an arithmetic number, because the mean of its divisors is an integer number (3032070).

Almost surely, 2^12120959 is an apocalyptic number.

12120959 is a deficient number, since it is larger than the sum of its proper divisors (7321).

12120959 is an equidigital number, since it uses as much as digits as its factorization.

12120959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7320.

The product of its (nonzero) digits is 1620, while the sum is 29.

The square root of 12120959 is about 3481.5167671577. The cubic root of 12120959 is about 229.7095198690.

The spelling of 12120959 in words is "twelve million, one hundred twenty thousand, nine hundred fifty-nine".