For 840 to be an integer, 840 has to be a whole number. Furthermore, for 840 to be an integer, you should be able to write 840 without a fractional or decimal component.
840 is a whole number that can be written without a fractional component, thus 840 is an integer.
The answer to the question: "Is 840 an integer?" is YES.
Integer?
Check other numbers to see if they are integers.
Is 841 an Integer?
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More Information from Research Maniacs:
Is 840 a prime number?
Now you know that 840 is an integer, but do you know if 840 is a prime number?
What are the factors of 840?
What are the factors of the integer 840 you ask?
Is 840 a square number?
Find out if 840 is a perfect square number!
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