126911 has 4 divisors (see below), whose sum is σ = 127800. Its totient is φ = 126024.

The previous prime is 126859. The next prime is 126913. The reversal of 126911 is 119621.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 126911 - 2¹⁰ = 125887 is a prime.

It is a super-2 number, since 2×126911² = 32212803842, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 126911.

It is not an unprimeable number, because it can be changed into a prime (126913) 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, 176 + ... + 533.

It is an arithmetic number, because the mean of its divisors is an integer number (31950).

2¹²⁶⁹¹¹ is an apocalyptic number.

126911 is a deficient number, since it is larger than the sum of its proper divisors (889).

126911 is an equidigital number, since it uses as much as digits as its factorization.

126911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 888.

The product of its digits is 108, while the sum is 20.

The square root of 126911 is about 356.2457017285. The cubic root of 126911 is about 50.2535124563.

The spelling of 126911 in words is "one hundred twenty-six thousand, nine hundred eleven".