12145699 has 2 divisors, whose sum is σ = 12145700. Its totient is φ = 12145698.

The previous prime is 12145673. The next prime is 12145703. The reversal of 12145699 is 99654121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12145699 - 2⁷ = 12145571 is a prime.

It is not a weakly prime, because it can be changed into another prime (12145669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6072849 + 6072850.

It is an arithmetic number, because the mean of its divisors is an integer number (6072850).

Almost surely, 2^12145699 is an apocalyptic number.

12145699 is a deficient number, since it is larger than the sum of its proper divisors (1).

12145699 is an equidigital number, since it uses as much as digits as its factorization.

12145699 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19440, while the sum is 37.

The square root of 12145699 is about 3485.0680050754. The cubic root of 12145699 is about 229.8656997934.

The spelling of 12145699 in words is "twelve million, one hundred forty-five thousand, six hundred ninety-nine".