12866129 has 2 divisors, whose sum is σ = 12866130. Its totient is φ = 12866128.

The previous prime is 12866101. The next prime is 12866137. The reversal of 12866129 is 92166821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12816400 + 49729 = 3580^2 + 223^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12866129 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12866149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6433064 + 6433065.

It is an arithmetic number, because the mean of its divisors is an integer number (6433065).

Almost surely, 2^12866129 is an apocalyptic number.

It is an amenable number.

12866129 is a deficient number, since it is larger than the sum of its proper divisors (1).

12866129 is an equidigital number, since it uses as much as digits as its factorization.

12866129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 35.

The square root of 12866129 is about 3586.9386668857. The cubic root of 12866129 is about 234.3235655785.

The spelling of 12866129 in words is "twelve million, eight hundred sixty-six thousand, one hundred twenty-nine".