12443129 has 2 divisors, whose sum is σ = 12443130. Its totient is φ = 12443128.

The previous prime is 12443107. The next prime is 12443147. The reversal of 12443129 is 92134421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7812025 + 4631104 = 2795^2 + 2152^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12443129 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 12443098 and 12443107.

It is not a weakly prime, because it can be changed into another prime (12443149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6221564 + 6221565.

It is an arithmetic number, because the mean of its divisors is an integer number (6221565).

Almost surely, 2^12443129 is an apocalyptic number.

It is an amenable number.

12443129 is a deficient number, since it is larger than the sum of its proper divisors (1).

12443129 is an equidigital number, since it uses as much as digits as its factorization.

12443129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 26.

The square root of 12443129 is about 3527.4819631006. The cubic root of 12443129 is about 231.7269441572.

The spelling of 12443129 in words is "twelve million, four hundred forty-three thousand, one hundred twenty-nine".