Redirecting 404 to any page in WordPress

404.php

<?php
    header("HTTP/1.1 301 Moved Permanently");
    header("Location: ".get_bloginfo('url'));
    exit();
?>

redirect.php

<?php 
    function redirecting_404_wp() {
    	global $wp_query;
      	if ($wp_query->is_404) {
           wp_redirect( get_bloginfo('url'), 301 );exit;
    	}
    }
    add_action('wp', 'redirecting_404_wp', 1);
;?>