14401421 has 2 divisors, whose sum is σ = 14401422. Its totient is φ = 14401420.

The previous prime is 14401403. The next prime is 14401459. The reversal of 14401421 is 12410441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12524521 + 1876900 = 3539^2 + 1370^2 .

It is an emirp because it is prime and its reverse (12410441) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14401421 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 14401421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14401921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7200710 + 7200711.

It is an arithmetic number, because the mean of its divisors is an integer number (7200711).

Almost surely, 2^14401421 is an apocalyptic number.

It is an amenable number.

14401421 is a deficient number, since it is larger than the sum of its proper divisors (1).

14401421 is an equidigital number, since it uses as much as digits as its factorization.

14401421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 14401421 is about 3794.9204207730. The cubic root of 14401421 is about 243.2960821607.

Adding to 14401421 its reverse (12410441), we get a palindrome (26811862).

The spelling of 14401421 in words is "fourteen million, four hundred one thousand, four hundred twenty-one".