14421257 has 2 divisors, whose sum is σ = 14421258. Its totient is φ = 14421256.

The previous prime is 14421233. The next prime is 14421269. The reversal of 14421257 is 75212441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12823561 + 1597696 = 3581^2 + 1264^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14421257 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (14421227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7210628 + 7210629.

It is an arithmetic number, because the mean of its divisors is an integer number (7210629).

Almost surely, 2^14421257 is an apocalyptic number.

It is an amenable number.

14421257 is a deficient number, since it is larger than the sum of its proper divisors (1).

14421257 is an equidigital number, since it uses as much as digits as its factorization.

14421257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2240, while the sum is 26.

The square root of 14421257 is about 3797.5330149980. The cubic root of 14421257 is about 243.4077333431.

Adding to 14421257 its reverse (75212441), we get a palindrome (89633698).

The spelling of 14421257 in words is "fourteen million, four hundred twenty-one thousand, two hundred fifty-seven".