126196817 has 2 divisors, whose sum is σ = 126196818. Its totient is φ = 126196816.

The previous prime is 126196801. The next prime is 126196823. The reversal of 126196817 is 718691621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125798656 + 398161 = 11216^2 + 631^2 .

It is a cyclic number.

It is not a de Polignac number, because 126196817 - 2⁴ = 126196801 is a prime.

It is not a weakly prime, because it can be changed into another prime (126196867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63098408 + 63098409.

It is an arithmetic number, because the mean of its divisors is an integer number (63098409).

Almost surely, 2^126196817 is an apocalyptic number.

It is an amenable number.

126196817 is a deficient number, since it is larger than the sum of its proper divisors (1).

126196817 is an equidigital number, since it uses as much as digits as its factorization.

126196817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 41.

The square root of 126196817 is about 11233.7356653964. The cubic root of 126196817 is about 501.5906900438.

The spelling of 126196817 in words is "one hundred twenty-six million, one hundred ninety-six thousand, eight hundred seventeen".