14818421 has 2 divisors, whose sum is σ = 14818422. Its totient is φ = 14818420.

The previous prime is 14818409. The next prime is 14818451. The reversal of 14818421 is 12481841.

It is a happy number.

14818421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14554225 + 264196 = 3815^2 + 514^2 .

It is a cyclic number.

It is not a de Polignac number, because 14818421 - 2⁶ = 14818357 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14818451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7409210 + 7409211.

It is an arithmetic number, because the mean of its divisors is an integer number (7409211).

Almost surely, 2^14818421 is an apocalyptic number.

It is an amenable number.

14818421 is a deficient number, since it is larger than the sum of its proper divisors (1).

14818421 is an equidigital number, since it uses as much as digits as its factorization.

14818421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2048, while the sum is 29.

The square root of 14818421 is about 3849.4702232905. The cubic root of 14818421 is about 245.6220262424.

The spelling of 14818421 in words is "fourteen million, eight hundred eighteen thousand, four hundred twenty-one".