13021429 has 2 divisors, whose sum is σ = 13021430. Its totient is φ = 13021428.

The previous prime is 13021399. The next prime is 13021433. The reversal of 13021429 is 92412031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12215025 + 806404 = 3495^2 + 898^2 .

It is a cyclic number.

It is not a de Polignac number, because 13021429 - 2¹⁹ = 12497141 is a prime.

It is a super-2 number, since 2×13021429² = 339115226404082, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13021469) 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, 6510714 + 6510715.

It is an arithmetic number, because the mean of its divisors is an integer number (6510715).

Almost surely, 2^13021429 is an apocalyptic number.

It is an amenable number.

13021429 is a deficient number, since it is larger than the sum of its proper divisors (1).

13021429 is an equidigital number, since it uses as much as digits as its factorization.

13021429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 13021429 is about 3608.5217194857. The cubic root of 13021429 is about 235.2625946458.

The spelling of 13021429 in words is "thirteen million, twenty-one thousand, four hundred twenty-nine".