12397129 has 8 divisors (see below), whose sum is σ = 12856032. Its totient is φ = 11945760.

The previous prime is 12397111. The next prime is 12397157. The reversal of 12397129 is 92179321.

It is a happy number.

12397129 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12397129 - 2¹⁵ = 12364361 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12397094 and 12397103.

It is not an unprimeable number, because it can be changed into a prime (12397159) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1582 + ... + 5224.

It is an arithmetic number, because the mean of its divisors is an integer number (1607004).

Almost surely, 2^12397129 is an apocalyptic number.

It is an amenable number.

12397129 is a deficient number, since it is larger than the sum of its proper divisors (458903).

12397129 is an equidigital number, since it uses as much as digits as its factorization.

12397129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3767.

The product of its digits is 6804, while the sum is 34.

The square root of 12397129 is about 3520.9556941262. The cubic root of 12397129 is about 231.4410406727.

The spelling of 12397129 in words is "twelve million, three hundred ninety-seven thousand, one hundred twenty-nine".