13200123 has 4 divisors (see below), whose sum is σ = 17600168. Its totient is φ = 8800080.

The previous prime is 13200119. The next prime is 13200169. The reversal of 13200123 is 32100231.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 13200123 - 2² = 13200119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13200099 and 13200108.

It is not an unprimeable number, because it can be changed into a prime (13200223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2200018 + ... + 2200023.

It is an arithmetic number, because the mean of its divisors is an integer number (4400042).

Almost surely, 2^13200123 is an apocalyptic number.

13200123 is a deficient number, since it is larger than the sum of its proper divisors (4400045).

13200123 is an equidigital number, since it uses as much as digits as its factorization.

13200123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4400044.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 13200123 is about 3633.1973521954. The cubic root of 13200123 is about 236.3338841563. Note that the first 3 decimals are identical.

Adding to 13200123 its reverse (32100231), we get a palindrome (45300354).

The spelling of 13200123 in words is "thirteen million, two hundred thousand, one hundred twenty-three".