126743274719 has 2 divisors, whose sum is σ = 126743274720. Its totient is φ = 126743274718.

The previous prime is 126743274683. The next prime is 126743274727. The reversal of 126743274719 is 917472347621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 126743274719 - 2¹² = 126743270623 is a prime.

It is a super-2 number, since 2×126743274719² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126743274419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63371637359 + 63371637360.

It is an arithmetic number, because the mean of its divisors is an integer number (63371637360).

Almost surely, 2^126743274719 is an apocalyptic number.

126743274719 is a deficient number, since it is larger than the sum of its proper divisors (1).

126743274719 is an equidigital number, since it uses as much as digits as its factorization.

126743274719 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3556224, while the sum is 53.

The spelling of 126743274719 in words is "one hundred twenty-six billion, seven hundred forty-three million, two hundred seventy-four thousand, seven hundred nineteen".