123726 has 16 divisors (see below), whose sum is σ = 262224. Its totient is φ = 38784.

The previous prime is 123719. The next prime is 123727. The reversal of 123726 is 627321.

It is a happy number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 123726.

It is not an unprimeable number, because it can be changed into a prime (123727) by changing a digit.

123726 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 7 ways as a sum of consecutive naturals, for example, 505 + ... + 708.

It is an arithmetic number, because the mean of its divisors is an integer number (16389).

2¹²³⁷²⁶ is an apocalyptic number.

123726 is an abundant number, since it is smaller than the sum of its proper divisors (138498).

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

123726 is a wasteful number, since it uses less digits than its factorization.

123726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1235.

The product of its digits is 504, while the sum is 21.

The square root of 123726 is about 351.7470682181. The cubic root of 123726 is about 49.8295529496.

It can be divided in two parts, 123 and 726, that multiplied together give a palindrome (89298).

The spelling of 123726 in words is "one hundred twenty-three thousand, seven hundred twenty-six".