126705345743 has 2 divisors, whose sum is σ = 126705345744. Its totient is φ = 126705345742.

The previous prime is 126705345623. The next prime is 126705345763. The reversal of 126705345743 is 347543507621.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 126705345743 - 2³⁰ = 125631603919 is a prime.

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 (126705345763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63352672871 + 63352672872.

It is an arithmetic number, because the mean of its divisors is an integer number (63352672872).

Almost surely, 2^126705345743 is an apocalyptic number.

126705345743 is a deficient number, since it is larger than the sum of its proper divisors (1).

126705345743 is an equidigital number, since it uses as much as digits as its factorization.

126705345743 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2116800, while the sum is 47.

The spelling of 126705345743 in words is "one hundred twenty-six billion, seven hundred five million, three hundred forty-five thousand, seven hundred forty-three".