Some perfect squares (such as 121) have a digit sum $(1 + 2 + 1 = 4)$ that is equal to the square of the digit sum of their square root $(\sqrt{121}=11$, and $(1 + 1)^2 = 4)$.

What is the smallest perfect square greater than 100 that does not have this property?

p.s

it is different from the one before

Guest Aug 23, 2020