Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_25664518_3 (itv1_weekly_ranking INTEGER, viewers__millions_ VARCHAR)
### Question:
What is the minimum ITV1 ranking for the episode having viewership of 5.42 million?
### Answer:
SELECT MIN(itv1_weekly_ranking) FROM table_25664518_3 WHERE viewers__millions_ = "5.42"