14042442581 has 2 divisors, whose sum is σ = 14042442582. Its totient is φ = 14042442580.

The previous prime is 14042442577. The next prime is 14042442679. The reversal of 14042442581 is 18524424041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13790744356 + 251698225 = 117434^2 + 15865^2 .

It is a cyclic number.

It is not a de Polignac number, because 14042442581 - 2² = 14042442577 is a prime.

It is a super-2 number, since 2×14042442581² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14042442541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7021221290 + 7021221291.

It is an arithmetic number, because the mean of its divisors is an integer number (7021221291).

Almost surely, 2^14042442581 is an apocalyptic number.

It is an amenable number.

14042442581 is a deficient number, since it is larger than the sum of its proper divisors (1).

14042442581 is an equidigital number, since it uses as much as digits as its factorization.

14042442581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40960, while the sum is 35.

The spelling of 14042442581 in words is "fourteen billion, forty-two million, four hundred forty-two thousand, five hundred eighty-one".