14223421 has 2 divisors, whose sum is σ = 14223422. Its totient is φ = 14223420.

The previous prime is 14223413. The next prime is 14223437. The reversal of 14223421 is 12432241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11628100 + 2595321 = 3410^2 + 1611^2 .

It is an emirp because it is prime and its reverse (12432241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 14223421 - 2³ = 14223413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14223481) 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, 7111710 + 7111711.

It is an arithmetic number, because the mean of its divisors is an integer number (7111711).

Almost surely, 2^14223421 is an apocalyptic number.

It is an amenable number.

14223421 is a deficient number, since it is larger than the sum of its proper divisors (1).

14223421 is an equidigital number, since it uses as much as digits as its factorization.

14223421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 384, while the sum is 19.

The square root of 14223421 is about 3771.3950999597. The cubic root of 14223421 is about 242.2895527815.

Adding to 14223421 its reverse (12432241), we get a palindrome (26655662).

The spelling of 14223421 in words is "fourteen million, two hundred twenty-three thousand, four hundred twenty-one".