123894 has 12 divisors (see below), whose sum is σ = 268476. Its totient is φ = 41292.

The previous prime is 123887. The next prime is 123911. The reversal of 123894 is 498321.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3424 + ... + 3459.

It is an arithmetic number, because the mean of its divisors is an integer number (22373).

123894 is a Friedman number, since it can be written as 41298*3, using all its digits and the basic arithmetic operations.

2¹²³⁸⁹⁴ is an apocalyptic number.

123894 is an abundant number, since it is smaller than the sum of its proper divisors (144582).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123894 is a wasteful number, since it uses less digits than its factorization.

123894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6891 (or 6888 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 123894 is about 351.9857951679. The cubic root of 123894 is about 49.8520962544.

The spelling of 123894 in words is "one hundred twenty-three thousand, eight hundred ninety-four".