14180921 has 2 divisors, whose sum is σ = 14180922. Its totient is φ = 14180920.

The previous prime is 14180911. The next prime is 14180923. The reversal of 14180921 is 12908141.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14167696 + 13225 = 3764^2 + 115^2 .

It is a cyclic number.

It is not a de Polignac number, because 14180921 - 2¹⁸ = 13918777 is a prime.

Together with 14180923, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (14180923) 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, 7090460 + 7090461.

It is an arithmetic number, because the mean of its divisors is an integer number (7090461).

Almost surely, 2^14180921 is an apocalyptic number.

It is an amenable number.

14180921 is a deficient number, since it is larger than the sum of its proper divisors (1).

14180921 is an equidigital number, since it uses as much as digits as its factorization.

14180921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 14180921 is about 3765.7563649286. The cubic root of 14180921 is about 242.0479892535.

The spelling of 14180921 in words is "fourteen million, one hundred eighty thousand, nine hundred twenty-one".