In the Happy Number "Family Tree" below, you can see the paths some happy numbers take to get to 1. Notice that if you start at 19, the next number in the tree is 82.

You could consider 19 to be a "parent" of 82 because the next step from 19 is 82. In other words, when you square the digits of 19 and add them together, you get 82.

But is there a number that is a "parent" of 19? Could there be more than one?

Use the buttons to add up the squares of combinations of digits. Can you find a combination that adds up to 19? What other numbers can you find "parents" for? (Melancholy numbers can have "parents" too!)

Your digits:

Sum of the squares of the digits:

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