12287743 has 4 divisors (see below), whose sum is σ = 13232968. Its totient is φ = 11342520.

The previous prime is 12287711. The next prime is 12287767. The reversal of 12287743 is 34778221.

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

It is a cyclic number.

It is not a de Polignac number, because 12287743 - 2⁵ = 12287711 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12287699 and 12287708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12288743) 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, 472593 + ... + 472618.

It is an arithmetic number, because the mean of its divisors is an integer number (3308242).

Almost surely, 2^12287743 is an apocalyptic number.

12287743 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12287743 is a deficient number, since it is larger than the sum of its proper divisors (945225).

12287743 is an equidigital number, since it uses as much as digits as its factorization.

12287743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 945224.

The product of its digits is 18816, while the sum is 34.

The square root of 12287743 is about 3505.3877103681. The cubic root of 12287743 is about 230.7583224787.

The spelling of 12287743 in words is "twelve million, two hundred eighty-seven thousand, seven hundred forty-three".