12122539 has 12 divisors (see below), whose sum is σ = 14322312. Its totient is φ = 10171200.

The previous prime is 12122533. The next prime is 12122543. The reversal of 12122539 is 93522121.

It is a happy number.

It is not a de Polignac number, because 12122539 - 2⁵ = 12122507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12122533) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1402 + ... + 5119.

It is an arithmetic number, because the mean of its divisors is an integer number (1193526).

Almost surely, 2^12122539 is an apocalyptic number.

12122539 is a deficient number, since it is larger than the sum of its proper divisors (2199773).

12122539 is a wasteful number, since it uses less digits than its factorization.

12122539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6558 (or 6545 counting only the distinct ones).

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

The square root of 12122539 is about 3481.7436723573. The cubic root of 12122539 is about 229.7195005224.

The spelling of 12122539 in words is "twelve million, one hundred twenty-two thousand, five hundred thirty-nine".