13442120449 has 2 divisors, whose sum is σ = 13442120450. Its totient is φ = 13442120448.

The previous prime is 13442120411. The next prime is 13442120453. The reversal of 13442120449 is 94402124431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11041806400 + 2400314049 = 105080^2 + 48993^2 .

It is a cyclic number.

It is not a de Polignac number, because 13442120449 - 2¹¹ = 13442118401 is a prime.

It is not a weakly prime, because it can be changed into another prime (13442120249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6721060224 + 6721060225.

It is an arithmetic number, because the mean of its divisors is an integer number (6721060225).

Almost surely, 2^13442120449 is an apocalyptic number.

It is an amenable number.

13442120449 is a deficient number, since it is larger than the sum of its proper divisors (1).

13442120449 is an equidigital number, since it uses as much as digits as its factorization.

13442120449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 34.

The spelling of 13442120449 in words is "thirteen billion, four hundred forty-two million, one hundred twenty thousand, four hundred forty-nine".