12158873 has 2 divisors, whose sum is σ = 12158874. Its totient is φ = 12158872.

The previous prime is 12158863. The next prime is 12158891. The reversal of 12158873 is 37885121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9684544 + 2474329 = 3112^2 + 1573^2 .

It is an emirp because it is prime and its reverse (37885121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12158873 - 2⁸ = 12158617 is a prime.

It is not a weakly prime, because it can be changed into another prime (12158813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6079436 + 6079437.

It is an arithmetic number, because the mean of its divisors is an integer number (6079437).

Almost surely, 2^12158873 is an apocalyptic number.

It is an amenable number.

12158873 is a deficient number, since it is larger than the sum of its proper divisors (1).

12158873 is an equidigital number, since it uses as much as digits as its factorization.

12158873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13440, while the sum is 35.

The square root of 12158873 is about 3486.9575563806. The cubic root of 12158873 is about 229.9487787640.

It can be divided in two parts, 12158 and 873, that added together give a palindrome (13031).

The spelling of 12158873 in words is "twelve million, one hundred fifty-eight thousand, eight hundred seventy-three".