123996 has 12 divisors (see below), whose sum is σ = 289352. Its totient is φ = 41328.

The previous prime is 123989. The next prime is 123997. The reversal of 123996 is 699321.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123997) by changing a digit.

123996 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, 5155 + ... + 5178.

2¹²³⁹⁹⁶ is an apocalyptic number.

It is an amenable number.

123996 is an abundant number, since it is smaller than the sum of its proper divisors (165356).

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

123996 is a wasteful number, since it uses less digits than its factorization.

123996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10340 (or 10338 counting only the distinct ones).

The product of its digits is 2916, while the sum is 30.

The square root of 123996 is about 352.1306575690. The cubic root of 123996 is about 49.8657733197.

The spelling of 123996 in words is "one hundred twenty-three thousand, nine hundred ninety-six".