126043303993 has 2 divisors, whose sum is σ = 126043303994. Its totient is φ = 126043303992.

The previous prime is 126043303979. The next prime is 126043304063. The reversal of 126043303993 is 399303340621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125994471849 + 48832144 = 354957^2 + 6988^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126043303993 is a prime.

It is not a weakly prime, because it can be changed into another prime (126043303933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63021651996 + 63021651997.

It is an arithmetic number, because the mean of its divisors is an integer number (63021651997).

Almost surely, 2^126043303993 is an apocalyptic number.

It is an amenable number.

126043303993 is a deficient number, since it is larger than the sum of its proper divisors (1).

126043303993 is an equidigital number, since it uses as much as digits as its factorization.

126043303993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 314928, while the sum is 43.

The spelling of 126043303993 in words is "one hundred twenty-six billion, forty-three million, three hundred three thousand, nine hundred ninety-three".