12129497 has 2 divisors, whose sum is σ = 12129498. Its totient is φ = 12129496.

The previous prime is 12129493. The next prime is 12129499. The reversal of 12129497 is 79492121.

12129497 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., 11262736 + 866761 = 3356^2 + 931^2 .

It is a cyclic number.

It is not a de Polignac number, because 12129497 - 2² = 12129493 is a prime.

Together with 12129499, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12129493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6064748 + 6064749.

It is an arithmetic number, because the mean of its divisors is an integer number (6064749).

Almost surely, 2^12129497 is an apocalyptic number.

It is an amenable number.

12129497 is a deficient number, since it is larger than the sum of its proper divisors (1).

12129497 is an equidigital number, since it uses as much as digits as its factorization.

12129497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 35.

The square root of 12129497 is about 3482.7427410017. The cubic root of 12129497 is about 229.7634429828.

The spelling of 12129497 in words is "twelve million, one hundred twenty-nine thousand, four hundred ninety-seven".