12723118 has 8 divisors (see below), whose sum is σ = 19153440. Its totient is φ = 6338640.

The previous prime is 12723107. The next prime is 12723119. The reversal of 12723118 is 81132721.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 12723092 and 12723101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12723119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10758 + ... + 11881.

It is an arithmetic number, because the mean of its divisors is an integer number (2394180).

Almost surely, 2^12723118 is an apocalyptic number.

12723118 is a deficient number, since it is larger than the sum of its proper divisors (6430322).

12723118 is a wasteful number, since it uses less digits than its factorization.

12723118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22922.

The product of its digits is 672, while the sum is 25.

The square root of 12723118 is about 3566.9479951353. The cubic root of 12723118 is about 233.4521358729.

Adding to 12723118 its reverse (81132721), we get a palindrome (93855839).

The spelling of 12723118 in words is "twelve million, seven hundred twenty-three thousand, one hundred eighteen".