Adding to 123043 its reverse (340321), we get a palindrome (463364).
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-123043 is a prime.
It is an Ulam number.
It is a Duffinian number.
It is a plaindrome in base 15.
2123043 is an apocalyptic number.
123043 is an equidigital number, since it uses as much as digits as its factorization.
123043 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1804.
The square root of 123043 is about 350.7748565676. The cubic root of 123043 is about 49.7376929735.
The spelling of 123043 in words is "one hundred twenty-three thousand, forty-three", and thus it is an iban number.