12743128 has 16 divisors (see below), whose sum is σ = 24476760. Its totient is φ = 6216000.

The previous prime is 12743119. The next prime is 12743131. The reversal of 12743128 is 82134721.

It is a super-2 number, since 2×12743128² = 324774622448768, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12743096 and 12743105.

It is a congruent number.

It is an unprimeable number.

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, 19098 + ... + 19753.

Almost surely, 2^12743128 is an apocalyptic number.

It is an amenable number.

12743128 is a deficient number, since it is larger than the sum of its proper divisors (11733632).

12743128 is a wasteful number, since it uses less digits than its factorization.

12743128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38898 (or 38894 counting only the distinct ones).

The product of its digits is 2688, while the sum is 28.

The square root of 12743128 is about 3569.7518121012. The cubic root of 12743128 is about 233.5744573154.

Adding to 12743128 its reverse (82134721), we get a palindrome (94877849).

The spelling of 12743128 in words is "twelve million, seven hundred forty-three thousand, one hundred twenty-eight".