123868 has 12 divisors (see below), whose sum is σ = 219240. Its totient is φ = 61232.

The previous prime is 123863. The next prime is 123887. The reversal of 123868 is 868321.

It is a congruent number.

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

123868 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 603 + ... + 781.

It is an arithmetic number, because the mean of its divisors is an integer number (18270).

2¹²³⁸⁶⁸ is an apocalyptic number.

It is an amenable number.

123868 is a deficient number, since it is larger than the sum of its proper divisors (95372).

123868 is a wasteful number, since it uses less digits than its factorization.

123868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356 (or 354 counting only the distinct ones).

The product of its digits is 2304, while the sum is 28.

The square root of 123868 is about 351.9488599214. The cubic root of 123868 is about 49.8486087431.

The spelling of 123868 in words is "one hundred twenty-three thousand, eight hundred sixty-eight".