Numbers 2:28 Midrash

וּצְבָא֖וֹ וּפְקֻדֵיהֶ֑ם אֶחָ֧ד וְאַרְבָּעִ֛ים אֶ֖לֶף וַחֲמֵ֥שׁ מֵאֽוֹת׃

and his host, and those that were numbered of them, forty and one thousand and five hundred;