126722866 has 8 divisors (see below), whose sum is σ = 196639020. Its totient is φ = 61176528.

The previous prime is 126722839. The next prime is 126722867. The reversal of 126722866 is 668227621.

It can be written as a sum of positive squares in 2 ways, for example, as 117267241 + 9455625 = 10829^2 + 3075^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (126722867) 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, 1092381 + ... + 1092496.

Almost surely, 2^126722866 is an apocalyptic number.

126722866 is a deficient number, since it is larger than the sum of its proper divisors (69916154).

126722866 is a wasteful number, since it uses less digits than its factorization.

126722866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2184908.

The product of its digits is 96768, while the sum is 40.

The square root of 126722866 is about 11257.1251214509. The cubic root of 126722866 is about 502.2866809051.

The spelling of 126722866 in words is "one hundred twenty-six million, seven hundred twenty-two thousand, eight hundred sixty-six".