126308705 has 4 divisors (see below), whose sum is σ = 151570452. Its totient is φ = 101046960.

The previous prime is 126308701. The next prime is 126308719. The reversal of 126308705 is 507803621.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 42823936 + 83484769 = 6544^2 + 9137^2 .

It is not a de Polignac number, because 126308705 - 2² = 126308701 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (126308701) 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 in 3 ways as a sum of consecutive naturals, for example, 12630866 + ... + 12630875.

It is an arithmetic number, because the mean of its divisors is an integer number (37892613).

Almost surely, 2^126308705 is an apocalyptic number.

It is an amenable number.

126308705 is a deficient number, since it is larger than the sum of its proper divisors (25261747).

126308705 is an equidigital number, since it uses as much as digits as its factorization.

126308705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25261746.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 126308705 is about 11238.7145617281. The cubic root of 126308705 is about 501.7388855436.

The spelling of 126308705 in words is "one hundred twenty-six million, three hundred eight thousand, seven hundred five".