126866961 has 12 divisors (see below), whose sum is σ = 197348788. Its totient is φ = 78071904.

The previous prime is 126866951. The next prime is 126866977. The reversal of 126866961 is 169668621.

It can be written as a sum of positive squares in 2 ways, for example, as 78216336 + 48650625 = 8844^2 + 6975^2 .

It is not a de Polignac number, because 126866961 - 2⁹ = 126866449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (126866921) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 542050 + ... + 542283.

Almost surely, 2^126866961 is an apocalyptic number.

It is an amenable number.

126866961 is a deficient number, since it is larger than the sum of its proper divisors (70481827).

126866961 is a wasteful number, since it uses less digits than its factorization.

126866961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1084352 (or 1084349 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 126866961 is about 11263.5234718093. The cubic root of 126866961 is about 502.4769901100.

The spelling of 126866961 in words is "one hundred twenty-six million, eight hundred sixty-six thousand, nine hundred sixty-one".