12149429 has 2 divisors, whose sum is σ = 12149430. Its totient is φ = 12149428.

The previous prime is 12149419. The next prime is 12149443. The reversal of 12149429 is 92494121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11662225 + 487204 = 3415^2 + 698^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12149429 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12149395 and 12149404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12149419) 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, 6074714 + 6074715.

It is an arithmetic number, because the mean of its divisors is an integer number (6074715).

Almost surely, 2^12149429 is an apocalyptic number.

It is an amenable number.

12149429 is a deficient number, since it is larger than the sum of its proper divisors (1).

12149429 is an equidigital number, since it uses as much as digits as its factorization.

12149429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 32.

The square root of 12149429 is about 3485.6031041988. The cubic root of 12149429 is about 229.8892283227.

The spelling of 12149429 in words is "twelve million, one hundred forty-nine thousand, four hundred twenty-nine".