14242309 has 2 divisors, whose sum is σ = 14242310. Its totient is φ = 14242308.

The previous prime is 14242307. The next prime is 14242321. The reversal of 14242309 is 90324241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8850625 + 5391684 = 2975^2 + 2322^2 .

It is a cyclic number.

It is not a de Polignac number, because 14242309 - 2¹ = 14242307 is a prime.

Together with 14242307, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14242303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7121154 + 7121155.

It is an arithmetic number, because the mean of its divisors is an integer number (7121155).

Almost surely, 2^14242309 is an apocalyptic number.

It is an amenable number.

14242309 is a deficient number, since it is larger than the sum of its proper divisors (1).

14242309 is an equidigital number, since it uses as much as digits as its factorization.

14242309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 14242309 is about 3773.8983823097. The cubic root of 14242309 is about 242.3967548589.

The spelling of 14242309 in words is "fourteen million, two hundred forty-two thousand, three hundred nine".