126666668 has 12 divisors (see below), whose sum is σ = 221749752. Its totient is φ = 63309600.

The previous prime is 126666667. The next prime is 126666679. The reversal of 126666668 is 866666621.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (126666667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12296 + ... + 20112.

It is an arithmetic number, because the mean of its divisors is an integer number (18479146).

Almost surely, 2^126666668 is an apocalyptic number.

It is an amenable number.

126666668 is a deficient number, since it is larger than the sum of its proper divisors (95083084).

126666668 is a wasteful number, since it uses less digits than its factorization.

126666668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11872 (or 11870 counting only the distinct ones).

The product of its digits is 746496, while the sum is 47.

The square root of 126666668 is about 11254.6287366576. The cubic root of 126666668 is about 502.2124199567.

Subtracting from 126666668 its sum of digits (47), we obtain a palindrome (126666621).

The spelling of 126666668 in words is "one hundred twenty-six million, six hundred sixty-six thousand, six hundred sixty-eight".