14403242521 has 2 divisors, whose sum is σ = 14403242522. Its totient is φ = 14403242520.

The previous prime is 14403242489. The next prime is 14403242527. The reversal of 14403242521 is 12524230441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14360666896 + 42575625 = 119836^2 + 6525^2 .

It is a cyclic number.

It is not a de Polignac number, because 14403242521 - 2⁵ = 14403242489 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 14403242521.

It is not a weakly prime, because it can be changed into another prime (14403242527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7201621260 + 7201621261.

It is an arithmetic number, because the mean of its divisors is an integer number (7201621261).

Almost surely, 2^14403242521 is an apocalyptic number.

It is an amenable number.

14403242521 is a deficient number, since it is larger than the sum of its proper divisors (1).

14403242521 is an equidigital number, since it uses as much as digits as its factorization.

14403242521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 14403242521 its reverse (12524230441), we get a palindrome (26927472962).

The spelling of 14403242521 in words is "fourteen billion, four hundred three million, two hundred forty-two thousand, five hundred twenty-one".