12156249 has 16 divisors (see below), whose sum is σ = 19163520. Its totient is φ = 6706560.

The previous prime is 12156233. The next prime is 12156251. The reversal of 12156249 is 94265121.

It is not a de Polignac number, because 12156249 - 2⁴ = 12156233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12156289) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9372 + ... + 10589.

It is an arithmetic number, because the mean of its divisors is an integer number (1197720).

Almost surely, 2^12156249 is an apocalyptic number.

It is an amenable number.

12156249 is a deficient number, since it is larger than the sum of its proper divisors (7007271).

12156249 is a wasteful number, since it uses less digits than its factorization.

12156249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20000.

The product of its digits is 4320, while the sum is 30.

The square root of 12156249 is about 3486.5812768384. The cubic root of 12156249 is about 229.9322358654.

The spelling of 12156249 in words is "twelve million, one hundred fifty-six thousand, two hundred forty-nine".