Adding to 121452 its reverse (254121), we get a palindrome (375573).
It is an alternating number because its digits alternate between odd and even.
2121452 is an apocalyptic number.
121452 is a gapful number since it is divisible by the number (12) 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 121452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147000).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
121452 is a wasteful number, since it uses less digits than its factorization.
121452 is an evil number, because the sum of its binary digits is even.
The square root of 121452 is about 348.4996413198. The cubic root of 121452 is about 49.5223855489.
The spelling of 121452 in words is "one hundred twenty-one thousand, four hundred fifty-two".