126743342837 has 2 divisors, whose sum is σ = 126743342838. Its totient is φ = 126743342836.

The previous prime is 126743342797. The next prime is 126743342893. The reversal of 126743342837 is 738243347621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 124361317201 + 2382025636 = 352649^2 + 48806^2 .

It is a cyclic number.

It is not a de Polignac number, because 126743342837 - 2¹⁶ = 126743277301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126743342437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63371671418 + 63371671419.

It is an arithmetic number, because the mean of its divisors is an integer number (63371671419).

Almost surely, 2^126743342837 is an apocalyptic number.

It is an amenable number.

126743342837 is a deficient number, since it is larger than the sum of its proper divisors (1).

126743342837 is an equidigital number, since it uses as much as digits as its factorization.

126743342837 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4064256, while the sum is 50.

The spelling of 126743342837 in words is "one hundred twenty-six billion, seven hundred forty-three million, three hundred forty-two thousand, eight hundred thirty-seven".