Manga chapter 429 is equivalent to episode 162
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Naruto Shippuden - Episode 166 - Confessions Naruto Shippuden - Manga 437 - Confessions
Episode 242 is trying to catch up to the latest manga chapters. Most likely this episode is equivalent to chapters 491 to maybe 493. Then chapter 494 will be caught up with the next episode of Naruto Shippuden.
It hasn't aired yet. In fact I believe that you will have to wait quite a long time, since the latest naruto shippuden episode (153) corresponds to the Naruto Manga Chapter 406
number 38
Episode 220: Departure