The Mahajani block spans U+11150–U+1117F, 48 codepoints in Plane 1 (Supplementary Multilingual Plane). 39 are assigned in Unicode 16.0; the other 9 are reserved for future characters.
All of its characters belong to the Mahajani script.
By general category: 36 other letters (Lo), 2 other punctuation (Po), 1 non-spacing marks (Mn).
The first 39 arrived in Unicode 7.0 (2014).
Because it lies outside the BMP, every character here takes four bytes in UTF-8 and a surrogate pair in UTF-16.