126923617 has 2 divisors, whose sum is σ = 126923618. Its totient is φ = 126923616.

The previous prime is 126923611. The next prime is 126923639. The reversal of 126923617 is 716329621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84621601 + 42302016 = 9199^2 + 6504^2 .

It is a cyclic number.

It is not a de Polignac number, because 126923617 - 2³ = 126923609 is a prime.

It is a super-2 number, since 2×126923617² = 32219209104725378, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (126923611) 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, 63461808 + 63461809.

It is an arithmetic number, because the mean of its divisors is an integer number (63461809).

Almost surely, 2^126923617 is an apocalyptic number.

It is an amenable number.

126923617 is a deficient number, since it is larger than the sum of its proper divisors (1).

126923617 is an equidigital number, since it uses as much as digits as its factorization.

126923617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 37.

The square root of 126923617 is about 11266.0382122555. The cubic root of 126923617 is about 502.5517773763.

The spelling of 126923617 in words is "one hundred twenty-six million, nine hundred twenty-three thousand, six hundred seventeen".