42426395449 has 2 divisors, whose sum is σ = 42426395450. Its totient is φ = 42426395448.

The previous prime is 42426395411. The next prime is 42426395471. The reversal of 42426395449 is 94459362424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41077155625 + 1349239824 = 202675^2 + 36732^2 .

It is a cyclic number.

It is not a de Polignac number, because 42426395449 - 2⁹ = 42426394937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42426395396 and 42426395405.

It is not a weakly prime, because it can be changed into another prime (42426345449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21213197724 + 21213197725.

It is an arithmetic number, because the mean of its divisors is an integer number (21213197725).

Almost surely, 2^42426395449 is an apocalyptic number.

It is an amenable number.

42426395449 is a deficient number, since it is larger than the sum of its proper divisors (1).

42426395449 is an equidigital number, since it uses as much as digits as its factorization.

42426395449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7464960, while the sum is 52.

The spelling of 42426395449 in words is "forty-two billion, four hundred twenty-six million, three hundred ninety-five thousand, four hundred forty-nine".