There are 14 Sajdas in the Holy Quran,  When reciting or listening to the Qur’an and on reaching any of these Aayaat it is Wajib to  perform a single Sajdah.  Although it is preferred to do this  immediately, one can also perform them together or at a later time but  as soon as possible. Sajdah are in the following chapters of the Quran: 9, 13, 14, 15, 16, 18, 19, 19, 21, 23, 24, 27, 30, 30