14123581 has 2 divisors, whose sum is σ = 14123582. Its totient is φ = 14123580.

The previous prime is 14123567. The next prime is 14123591. The reversal of 14123581 is 18532141.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13912900 + 210681 = 3730^2 + 459^2 .

It is a cyclic number.

It is not a de Polignac number, because 14123581 - 2¹¹ = 14121533 is a prime.

It is a super-2 number, since 2×14123581² = 398951080527122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14123591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7061790 + 7061791.

It is an arithmetic number, because the mean of its divisors is an integer number (7061791).

Almost surely, 2^14123581 is an apocalyptic number.

It is an amenable number.

14123581 is a deficient number, since it is larger than the sum of its proper divisors (1).

14123581 is an equidigital number, since it uses as much as digits as its factorization.

14123581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 960, while the sum is 25.

The square root of 14123581 is about 3758.1353088999. The cubic root of 14123581 is about 241.7213113582.

The spelling of 14123581 in words is "fourteen million, one hundred twenty-three thousand, five hundred eighty-one".