12123259 has 4 divisors (see below), whose sum is σ = 12131080. Its totient is φ = 12115440.

The previous prime is 12123257. The next prime is 12123271. The reversal of 12123259 is 95232121.

It is a happy number.

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 12123259 - 2¹ = 12123257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12123253) 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, 714 + ... + 4975.

It is an arithmetic number, because the mean of its divisors is an integer number (3032770).

Almost surely, 2^12123259 is an apocalyptic number.

12123259 is a deficient number, since it is larger than the sum of its proper divisors (7821).

12123259 is an equidigital number, since it uses as much as digits as its factorization.

12123259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7820.

The product of its digits is 1080, while the sum is 25.

The square root of 12123259 is about 3481.8470672906. The cubic root of 12123259 is about 229.7240483806.

The spelling of 12123259 in words is "twelve million, one hundred twenty-three thousand, two hundred fifty-nine".