Numbers 26:51

These were the numbered of the children of Israel, six hundred thousand and a thousand seven hundred and thirty.

These were the numbered of the children of Israel. The persons named were heads of families in every tribe, and those families were called after the name of their founders. The census which was taken on the plains of Moab comprehended only the males of 20 years old and upward.

Six hundred thousand and a thousand seven hundred and thirty. Assuming that there was an equal number of females, the total amount above 20 years of age would be 1,203,460.