126407791 has 2 divisors, whose sum is σ = 126407792. Its totient is φ = 126407790.

The previous prime is 126407759. The next prime is 126407803. The reversal of 126407791 is 197704621.

It is a strong prime.

It is an emirp because it is prime and its reverse (197704621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 126407791 - 2⁵ = 126407759 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 126407791.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126407711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63203895 + 63203896.

It is an arithmetic number, because the mean of its divisors is an integer number (63203896).

Almost surely, 2^126407791 is an apocalyptic number.

126407791 is a deficient number, since it is larger than the sum of its proper divisors (1).

126407791 is an equidigital number, since it uses as much as digits as its factorization.

126407791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 126407791 is about 11243.1219418807. The cubic root of 126407791 is about 501.8700517598.

The spelling of 126407791 in words is "one hundred twenty-six million, four hundred seven thousand, seven hundred ninety-one".