13442591 has 2 divisors, whose sum is σ = 13442592. Its totient is φ = 13442590.

The previous prime is 13442537. The next prime is 13442621. The reversal of 13442591 is 19524431.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13442591 - 2¹⁴ = 13426207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13442791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6721295 + 6721296.

It is an arithmetic number, because the mean of its divisors is an integer number (6721296).

Almost surely, 2^13442591 is an apocalyptic number.

13442591 is a deficient number, since it is larger than the sum of its proper divisors (1).

13442591 is an equidigital number, since it uses as much as digits as its factorization.

13442591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 29.

The square root of 13442591 is about 3666.4139155311. The cubic root of 13442591 is about 237.7721556028.

The spelling of 13442591 in words is "thirteen million, four hundred forty-two thousand, five hundred ninety-one".