12158137 has 2 divisors, whose sum is σ = 12158138. Its totient is φ = 12158136.

The previous prime is 12158131. The next prime is 12158141. The reversal of 12158137 is 73185121.

12158137 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12138256 + 19881 = 3484^2 + 141^2 .

It is an emirp because it is prime and its reverse (73185121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12158137 - 2³ = 12158129 is a prime.

It is not a weakly prime, because it can be changed into another prime (12158131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6079068 + 6079069.

It is an arithmetic number, because the mean of its divisors is an integer number (6079069).

Almost surely, 2^12158137 is an apocalyptic number.

It is an amenable number.

12158137 is a deficient number, since it is larger than the sum of its proper divisors (1).

12158137 is an equidigital number, since it uses as much as digits as its factorization.

12158137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1680, while the sum is 28.

The square root of 12158137 is about 3486.8520186552. The cubic root of 12158137 is about 229.9441389229.

The spelling of 12158137 in words is "twelve million, one hundred fifty-eight thousand, one hundred thirty-seven".