126247697 has 2 divisors, whose sum is σ = 126247698. Its totient is φ = 126247696.

The previous prime is 126247679. The next prime is 126247711. The reversal of 126247697 is 796742621.

It is a Cunningham number, because it is equal to 106⁴+1.

Together with previous prime (126247679) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126247696 + 1 = 11236^2 + 1^2 .

It is a cyclic number.

It is not a de Polignac number, because 126247697 - 2¹⁸ = 125985553 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (126241697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63123848 + 63123849.

It is an arithmetic number, because the mean of its divisors is an integer number (63123849).

Almost surely, 2^126247697 is an apocalyptic number.

It is an amenable number.

126247697 is a deficient number, since it is larger than the sum of its proper divisors (1).

126247697 is an equidigital number, since it uses as much as digits as its factorization.

126247697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 44.

The square root of 126247697 is about 11236.0000444998. Note that the first 4 decimals coincide. The cubic root of 126247697 is about 501.6580913879.

The spelling of 126247697 in words is "one hundred twenty-six million, two hundred forty-seven thousand, six hundred ninety-seven".