12743040 has 64 divisors (see below), whose sum is σ = 40624560. Its totient is φ = 3397632.

The previous prime is 12743039. The next prime is 12743089. The reversal of 12743040 is 4034721.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 12742998 and 12743016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1399 + ... + 5238.

Almost surely, 2^12743040 is an apocalyptic number.

12743040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12743040 is an abundant number, since it is smaller than the sum of its proper divisors (27881520).

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

12743040 is an equidigital number, since it uses as much as digits as its factorization.

12743040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6659 (or 6647 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 12743040 is about 3569.7394862931. The cubic root of 12743040 is about 233.5739196504.

Adding to 12743040 its reverse (4034721), we get a palindrome (16777761).

The spelling of 12743040 in words is "twelve million, seven hundred forty-three thousand, forty".