Adding to 1123457 its reverse (7543211), we get a palindrome (8666668).
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-1123457 is a prime.
It is a Duffinian number.
It is a plaindrome in base 10.
21123457 is an apocalyptic number.
It is an amenable number.
1123457 is an equidigital number, since it uses as much as digits as its factorization.
1123457 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2898.
The square root of 1123457 is about 1059.9325450235. The cubic root of 1123457 is about 103.9566202218.
The spelling of 1123457 in words is "one million, one hundred twenty-three thousand, four hundred fifty-seven".