Q: Is 400,640,455 a Palindrome?
A: No, the number 400,640,455 is not a palindrome.
A palindromic number is number that remains the same when its digits are reversed.
Here's how to check if a number is a palindrome:
Step 1
Take the original number and reverse it.
Here is the original number color coded:
400640455
Now we reverse it like this:
554046004
Notice the colors are going in the opposite direction now
Step 2
Compare the two numbers. If they are exactly the same then the number is a palindrome.
Is 400640455 = 554046004?
Answer:
NO, so that means the number 400,640,455 is not a palindrome!
Here are more examples of potential palindrome numbers in sequence:
| Number | 400,640,453 | 400,640,454 | 400,640,456 | 400,640,457 |
| Palindrome? | no | no | no | no |