A neon number, also known as a Pluperfect Digital Invariant, is a number where the sum of the digits of its square is equal to the original number.
NITHISHKUMAR-C/to-fing-given-number-is-Neon-number-or-not-C-program
A neon number, also known as a Pluperfect Digital Invariant, is a number where the sum of the digits of its square is equal to the original number.
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