126000731 has 2 divisors, whose sum is σ = 126000732. Its totient is φ = 126000730.

The previous prime is 126000713. The next prime is 126000751. The reversal of 126000731 is 137000621.

It is a happy number.

Together with previous prime (126000713) it forms an Ormiston pair, because they use the same digits, order apart.

It is an a-pointer prime, because the next prime (126000751) can be obtained adding 126000731 to its sum of digits (20).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 126000731 - 2²² = 121806427 is a prime.

It is a super-2 number, since 2×126000731² = 31752368425068722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (126000751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63000365 + 63000366.

It is an arithmetic number, because the mean of its divisors is an integer number (63000366).

Almost surely, 2^126000731 is an apocalyptic number.

126000731 is a deficient number, since it is larger than the sum of its proper divisors (1).

126000731 is an equidigital number, since it uses as much as digits as its factorization.

126000731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 126000731 is about 11225.0047216026. The cubic root of 126000731 is about 501.3307629974.

The spelling of 126000731 in words is "one hundred twenty-six million, seven hundred thirty-one", and thus it is an aban number.