[CONTENT] Three entries to check whether a number is a palindrome

[SpiderMath]

Description of the content report

There are three entries for checking whether a number is a palindrome, one in JavaScript (Is Palindrome Integer Number), one in Python (Is Int Palindrome) and one in Java & Dart (Palindrome Number). I'd like to request you to merge them (with a possibly more fitting name?)

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Additional information/context

The entries are as follows: Is Palindrome Integer Number, Is Int Palindrome & Palindrome Number

[SpiderMath]

Edits made since I found another entry (Palindrome Number)