If you want to redirect the 404 page on the home page or somebody type wrong URL with your domain name then redirects automatically on the home page after the sort while in blogger then you have to do the following setting in your blogger. Just follow the step below and apply on your blog.
1. Go to Blogger Dashboard.
2. Go Setting menu
3. Go to Search Preference Setting option
4. Click on the Custom Page Not Found button. (See in Image)
