126856 has 16 divisors (see below), whose sum is σ = 241740. Its totient is φ = 62400.

The previous prime is 126851. The next prime is 126857. The reversal of 126856 is 658621.

It can be written as a sum of positive squares in 2 ways, for example, as 122500 + 4356 = 350^2 + 66^2 .

It is not an unprimeable number, because it can be changed into a prime (126851) 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, 730 + ... + 886.

2¹²⁶⁸⁵⁶ is an apocalyptic number.

It is an amenable number.

126856 is a deficient number, since it is larger than the sum of its proper divisors (114884).

126856 is a wasteful number, since it uses less digits than its factorization.

126856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264 (or 260 counting only the distinct ones).

The product of its digits is 2880, while the sum is 28.

The square root of 126856 is about 356.1684994493. The cubic root of 126856 is about 50.2462518759.

The spelling of 126856 in words is "one hundred twenty-six thousand, eight hundred fifty-six".