123396 has 48 divisors (see below), whose sum is σ = 357504. Its totient is φ = 32256.

The previous prime is 123379. The next prime is 123397. The reversal of 123396 is 693321.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (123397) by changing a digit.

123396 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 15 ways as a sum of consecutive naturals, for example, 1036 + ... + 1148.

It is an arithmetic number, because the mean of its divisors is an integer number (7448).

2¹²³³⁹⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178752).

123396 is an abundant number, since it is smaller than the sum of its proper divisors (234108).

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

123396 is a wasteful number, since it uses less digits than its factorization.

123396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140 (or 138 counting only the distinct ones).

The product of its digits is 972, while the sum is 24.

The square root of 123396 is about 351.2776679494. The cubic root of 123396 is about 49.7852119766.

The spelling of 123396 in words is "one hundred twenty-three thousand, three hundred ninety-six".