126726091 has 2 divisors, whose sum is σ = 126726092. Its totient is φ = 126726090.

The previous prime is 126726077. The next prime is 126726163. The reversal of 126726091 is 190627621.

It is a weak prime.

It is an emirp because it is prime and its reverse (190627621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 126726091 - 2⁹ = 126725579 is a prime.

It is not a weakly prime, because it can be changed into another prime (126726001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63363045 + 63363046.

It is an arithmetic number, because the mean of its divisors is an integer number (63363046).

Almost surely, 2^126726091 is an apocalyptic number.

126726091 is a deficient number, since it is larger than the sum of its proper divisors (1).

126726091 is an equidigital number, since it uses as much as digits as its factorization.

126726091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 126726091 is about 11257.2683631510. The cubic root of 126726091 is about 502.2909418062.

The spelling of 126726091 in words is "one hundred twenty-six million, seven hundred twenty-six thousand, ninety-one".