126388751243 has 2 divisors, whose sum is σ = 126388751244. Its totient is φ = 126388751242.

The previous prime is 126388751233. The next prime is 126388751263. The reversal of 126388751243 is 342157883621.

It is a weak prime.

It is an emirp because it is prime and its reverse (342157883621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 126388751243 - 2³⁰ = 125315009419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 126388751191 and 126388751200.

It is not a weakly prime, because it can be changed into another prime (126388751233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63194375621 + 63194375622.

It is an arithmetic number, because the mean of its divisors is an integer number (63194375622).

Almost surely, 2^126388751243 is an apocalyptic number.

126388751243 is a deficient number, since it is larger than the sum of its proper divisors (1).

126388751243 is an equidigital number, since it uses as much as digits as its factorization.

126388751243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1935360, while the sum is 50.

The spelling of 126388751243 in words is "one hundred twenty-six billion, three hundred eighty-eight million, seven hundred fifty-one thousand, two hundred forty-three".