123718 has 8 divisors (see below), whose sum is σ = 212112. Its totient is φ = 53016.

The previous prime is 123707. The next prime is 123719. The reversal of 123718 is 817321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×123718² = 30612287048, which contains 22 as substring.

It is an Ulam number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123719) by changing a digit.

123718 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4405 + ... + 4432.

It is an arithmetic number, because the mean of its divisors is an integer number (26514).

2¹²³⁷¹⁸ is an apocalyptic number.

123718 is a deficient number, since it is larger than the sum of its proper divisors (88394).

123718 is an equidigital number, since it uses as much as digits as its factorization.

123718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8846.

The product of its digits is 336, while the sum is 22.

The square root of 123718 is about 351.7356962266. The cubic root of 123718 is about 49.8284789501.

It can be divided in two parts, 123 and 718, that added together give a square (841 = 29²).

The spelling of 123718 in words is "one hundred twenty-three thousand, seven hundred eighteen".