12129079 has 2 divisors, whose sum is σ = 12129080. Its totient is φ = 12129078.

The previous prime is 12129067. The next prime is 12129083. The reversal of 12129079 is 97092121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12129079 is a prime.

It is a super-2 number, since 2×12129079² = 294229114776482, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12129079.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12129059) 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, 6064539 + 6064540.

It is an arithmetic number, because the mean of its divisors is an integer number (6064540).

Almost surely, 2^12129079 is an apocalyptic number.

12129079 is a deficient number, since it is larger than the sum of its proper divisors (1).

12129079 is an equidigital number, since it uses as much as digits as its factorization.

12129079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 31.

The square root of 12129079 is about 3482.6827303101. The cubic root of 12129079 is about 229.7608036257.

The spelling of 12129079 in words is "twelve million, one hundred twenty-nine thousand, seventy-nine".