126861 has 12 divisors (see below), whose sum is σ = 196992. Its totient is φ = 72408.

The previous prime is 126859. The next prime is 126913. The reversal of 126861 is 168621.

It is not a de Polignac number, because 126861 - 2¹ = 126859 is a prime.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 285 + ... + 578.

It is an arithmetic number, because the mean of its divisors is an integer number (16416).

2¹²⁶⁸⁶¹ is an apocalyptic number.

It is an amenable number.

126861 is a deficient number, since it is larger than the sum of its proper divisors (70131).

126861 is an equidigital number, since it uses as much as digits as its factorization.

126861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880 (or 873 counting only the distinct ones).

The product of its digits is 576, while the sum is 24.

The square root of 126861 is about 356.1755185298. The cubic root of 126861 is about 50.2469120154.

It can be divided in two parts, 1 and 26861, that added together give a palindrome (26862).

The spelling of 126861 in words is "one hundred twenty-six thousand, eight hundred sixty-one".