126811917 has 24 divisors (see below), whose sum is σ = 191243520. Its totient is φ = 80879040.

The previous prime is 126811901. The next prime is 126811931. The reversal of 126811917 is 719118621.

It is not a de Polignac number, because 126811917 - 2⁴ = 126811901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126811957) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22278 + ... + 27384.

It is an arithmetic number, because the mean of its divisors is an integer number (7968480).

Almost surely, 2^126811917 is an apocalyptic number.

It is an amenable number.

126811917 is a deficient number, since it is larger than the sum of its proper divisors (64431603).

126811917 is a wasteful number, since it uses less digits than its factorization.

126811917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5233 (or 5230 counting only the distinct ones).

The product of its digits is 6048, while the sum is 36.

The square root of 126811917 is about 11261.0797439677. The cubic root of 126811917 is about 502.4043093945.

The spelling of 126811917 in words is "one hundred twenty-six million, eight hundred eleven thousand, nine hundred seventeen".