Where it comes from
The line in the source
Pokemon Legends Arceus, which "sold 1,424,657 units during its own launch week."
Explore / Mainline Pokémon video games / Figure
Record
Japan launch-week physical units (Famitsu), Jan 2022 launch week
1,424,657 units Jan 2022 launch week
ReportedReported by a reliable secondary source, or read carefully from filed documents.