123867 has 6 divisors (see below), whose sum is σ = 178932. Its totient is φ = 82572.

The previous prime is 123863. The next prime is 123887. The reversal of 123867 is 768321.

It is not a de Polignac number, because 123867 - 2² = 123863 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123867.

It is not an unprimeable number, because it can be changed into a prime (123863) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6873 + ... + 6890.

It is an arithmetic number, because the mean of its divisors is an integer number (29822).

2¹²³⁸⁶⁷ is an apocalyptic number.

123867 is a deficient number, since it is larger than the sum of its proper divisors (55065).

123867 is a wasteful number, since it uses less digits than its factorization.

123867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13769 (or 13766 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 123867 is about 351.9474392576. The cubic root of 123867 is about 49.8484745983.

It can be divided in two parts, 123 and 867, that added together give a triangular number (990 = T₄₄).

The spelling of 123867 in words is "one hundred twenty-three thousand, eight hundred sixty-seven".