Identify the number as a rational or irrational. explain. 127

127 is rational number.

Step-by-step explanation:

The given number 127 is rational because it can be written as the quotient of two integers  (p and q) like shown below:

which can be represented as  

But if it is the square root of the same number , then it would be an irrational number since the square root of 127 would gives a decimal number that will keep going on and cannot be represented as a fraction.