Hi

I am assuming you from general category

With 42 percentile

• Your rank will be  around  593340 - 667000 as per our rank predictor at

  JEE Main Rank Predictor 2021 - Predict your JEE Main ...

  JEE Main Rank Predictor - Know your expected IIT JEE Main 2021 Rank by ...

Your chances in colleges like NITs, IIITs  is  extremely low.

Some of the engineering colleges in which you hold a good chance on the basis of past year closing rank are listed below along with the link for their previous year cutoff :-

---------) DY Patil College of Engineering and Technology, Kolhapur :- https://www.careers360.com/colleges/dy-patil-college-of-engineering-and-technology-kolhapur/cut-off?college_id=2007&exam_sub_exam_id=2&gender_id=1

----------)Oriental College of Technology, Bhopal:- https://www.careers360.com/colleges/oriental-college-of-technology-bhopal/cut-off

----------)Gyan Ganga College of Technology, Jabalpur :- https://www.careers360.com/colleges/gyan-ganga-college-of-technology-jabalpur/cut-off

To have a personalised report on your chances of getting a college you can go through our college predictor, it will give you complete list of colleges which you can get on the basis of the category you belong to,  your home state, your gender etc, the link for  jee main college predictor is provided below

https://engineering.careers360.com/jee-main-college-predictor?icn=QnA&ici=qna_answer

To help you  further,

Minimum percentile in jee main 2021 to qualify it to  be eligible for jee advanced 2021 is given below :-

--------) general :-87.8992241 percentile

--------) EWS:- 66.2214845 percentile

--------) OBC-NCL :- 68.0234447 percentile

--------) SC :- 46.8825338 percentile

--------) ST:- 34.6728999 percentile

--------) PH :- 0.0096375 percentile

Thank you