42456422465449 has 2 divisors, whose sum is σ = 42456422465450. Its totient is φ = 42456422465448.

The previous prime is 42456422465419. The next prime is 42456422465459. The reversal of 42456422465449 is 94456422465424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28721667747600 + 13734754717849 = 5359260^2 + 3706043^2 .

It is a cyclic number.

It is not a de Polignac number, because 42456422465449 - 2¹¹ = 42456422463401 is a prime.

It is not a weakly prime, because it can be changed into another prime (42456422465419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21228211232724 + 21228211232725.

It is an arithmetic number, because the mean of its divisors is an integer number (21228211232725).

Almost surely, 2^{42456422465449} is an apocalyptic number.

It is an amenable number.

42456422465449 is a deficient number, since it is larger than the sum of its proper divisors (1).

42456422465449 is an equidigital number, since it uses as much as digits as its factorization.

42456422465449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 265420800, while the sum is 61.

The spelling of 42456422465449 in words is "forty-two trillion, four hundred fifty-six billion, four hundred twenty-two million, four hundred sixty-five thousand, four hundred forty-nine".