126000647 has 32 divisors (see below), whose sum is σ = 145981440. Its totient is φ = 108108000.

The previous prime is 126000643. The next prime is 126000649. The reversal of 126000647 is 746000621.

It is a cyclic number.

It is not a de Polignac number, because 126000647 - 2² = 126000643 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126000643) 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 31 ways as a sum of consecutive naturals, for example, 961772 + ... + 961902.

It is an arithmetic number, because the mean of its divisors is an integer number (4561920).

Almost surely, 2^126000647 is an apocalyptic number.

126000647 is a deficient number, since it is larger than the sum of its proper divisors (19980793).

126000647 is a wasteful number, since it uses less digits than its factorization.

126000647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 126000647 is about 11225.0009799554. Note that the first 3 decimals coincide. The cubic root of 126000647 is about 501.3306515912.

Subtracting from 126000647 its sum of digits (26), we obtain a palindrome (126000621).

The spelling of 126000647 in words is "one hundred twenty-six million, six hundred forty-seven", and thus it is an aban number.