12123279 has 24 divisors (see below), whose sum is σ = 20134400. Its totient is φ = 6885648.

The previous prime is 12123271. The next prime is 12123283. The reversal of 12123279 is 97232121.

It is not a de Polignac number, because 12123279 - 2³ = 12123271 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 (12123271) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12054 + ... + 13020.

Almost surely, 2^12123279 is an apocalyptic number.

12123279 is a deficient number, since it is larger than the sum of its proper divisors (8011121).

12123279 is a wasteful number, since it uses less digits than its factorization.

12123279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1179 (or 1176 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 12123279 is about 3481.8499393282. The cubic root of 12123279 is about 229.7241747074.

The spelling of 12123279 in words is "twelve million, one hundred twenty-three thousand, two hundred seventy-nine".