Dear Aspirant

Getting 40 percentile is a very poor one.you can predict your rank by using the formula {(100-your total percentile) X 869010/100}. your rank can go up to 5,21,400 with this percentile. But need not to worry you can predict your college based on JEE percentile by using the link I have given below

If you want to score better score you can try for JEE Mains April examination.This time you try harder for obtaining a good score.

Hope this helps you.

All the Best.