It is a semiprime because it is the product of two primes.
It is a de Polignac number, because none of the positive numbers 2k-124205 is a prime.
It is a Duffinian number.
It is a plaindrome in base 14.
It is a self number, because there is not a number n which added to its sum of digits gives 124205.
It is a congruent number.
It is an unprimeable number.
2124205 is an apocalyptic number.
It is an amenable number.
124205 is an equidigital number, since it uses as much as digits as its factorization.
124205 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 24846.
The square root of 124205 is about 352.4272974672. The cubic root of 124205 is about 49.8937744826.
Adding to 124205 its reverse (502421), we get a palindrome (626626).
The spelling of 124205 in words is "one hundred twenty-four thousand, two hundred five".