Japan is 5 times larger than Panama.
Area: 377,915 km2 World Factbook
Population: 127,103,388 (July 2014) World Factbook
Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south. Wikipedia
Area: 75,420 km2 World Factbook
Population: 3,608,431 (July 2014) World Factbook
Panama, officially the Republic of Panama, is the southernmost country of Central America and the whole of North America. Wikipedia