12136943 has 16 divisors (see below), whose sum is σ = 15306816. Its totient is φ = 9365760.

The previous prime is 12136937. The next prime is 12137003. The reversal of 12136943 is 34963121.

It is a cyclic number.

It is not a de Polignac number, because 12136943 - 2¹² = 12132847 is a prime.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12136913) 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, 2105 + ... + 5357.

It is an arithmetic number, because the mean of its divisors is an integer number (956676).

Almost surely, 2^12136943 is an apocalyptic number.

12136943 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12136943 is a deficient number, since it is larger than the sum of its proper divisors (3169873).

12136943 is a wasteful number, since it uses less digits than its factorization.

12136943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3314.

The product of its digits is 3888, while the sum is 29.

The square root of 12136943 is about 3483.8115620682. The cubic root of 12136943 is about 229.8104487419.

The spelling of 12136943 in words is "twelve million, one hundred thirty-six thousand, nine hundred forty-three".