14007421 has 2 divisors, whose sum is σ = 14007422. Its totient is φ = 14007420.

The previous prime is 14007419. The next prime is 14007431. The reversal of 14007421 is 12470041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11799225 + 2208196 = 3435^2 + 1486^2 .

It is an emirp because it is prime and its reverse (12470041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 14007421 - 2¹ = 14007419 is a prime.

Together with 14007419, 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 (14007401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7003710 + 7003711.

It is an arithmetic number, because the mean of its divisors is an integer number (7003711).

Almost surely, 2^14007421 is an apocalyptic number.

It is an amenable number.

14007421 is a deficient number, since it is larger than the sum of its proper divisors (1).

14007421 is an equidigital number, since it uses as much as digits as its factorization.

14007421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 14007421 is about 3742.6489282325. The cubic root of 14007421 is about 241.0568038138.

Adding to 14007421 its reverse (12470041), we get a palindrome (26477462).

The spelling of 14007421 in words is "fourteen million, seven thousand, four hundred twenty-one".