Adding to 123000 its reverse (321), we get a palindrome (123321).
It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.
It is a zygodrome in base 2.
It is a self number, because there is not a number n which added to its sum of digits gives 123000.
It is a congruent number.
123000 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
2123000 is an apocalyptic number.
123000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 123000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196560).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
123000 is a wasteful number, since it uses less digits than its factorization.
123000 is an evil number, because the sum of its binary digits is even.
The square root of 123000 is about 350.7135583350. The cubic root of 123000 is about 49.7318983327.
The spelling of 123000 in words is "one hundred twenty-three thousand", and thus it is an iban number.