126368731 has 2 divisors, whose sum is σ = 126368732. Its totient is φ = 126368730.

The previous prime is 126368719. The next prime is 126368771. The reversal of 126368731 is 137863621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 126368731 - 2⁷ = 126368603 is a prime.

It is a super-2 number, since 2×126368731² = 31938112349100722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (126368771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63184365 + 63184366.

It is an arithmetic number, because the mean of its divisors is an integer number (63184366).

Almost surely, 2^126368731 is an apocalyptic number.

126368731 is a deficient number, since it is larger than the sum of its proper divisors (1).

126368731 is an equidigital number, since it uses as much as digits as its factorization.

126368731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 37.

The square root of 126368731 is about 11241.3847456619. The cubic root of 126368731 is about 501.8183538291.

The spelling of 126368731 in words is "one hundred twenty-six million, three hundred sixty-eight thousand, seven hundred thirty-one".