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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?

hellospeedmind  Sep 30, 2018
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It looks like 196 =14^2. 1 + 9 + 6 =16. But (1+4)^2 =25

Guest Sep 30, 2018

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