12257429 has 2 divisors, whose sum is σ = 12257430. Its totient is φ = 12257428.

The previous prime is 12257423. The next prime is 12257447. The reversal of 12257429 is 92475221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10876804 + 1380625 = 3298^2 + 1175^2 .

It is an emirp because it is prime and its reverse (92475221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12257429 - 2⁸ = 12257173 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12257395 and 12257404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12257423) 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, 6128714 + 6128715.

It is an arithmetic number, because the mean of its divisors is an integer number (6128715).

Almost surely, 2^12257429 is an apocalyptic number.

It is an amenable number.

12257429 is a deficient number, since it is larger than the sum of its proper divisors (1).

12257429 is an equidigital number, since it uses as much as digits as its factorization.

12257429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080, while the sum is 32.

The square root of 12257429 is about 3501.0611248591. The cubic root of 12257429 is about 230.5684050924.

The spelling of 12257429 in words is "twelve million, two hundred fifty-seven thousand, four hundred twenty-nine".