CREATE TABLE table_25794 ("Rank" FLOAT, "City/Town" TEXT, "County" TEXT, "Region/Province" TEXT, "Population" FLOAT, "Country" TEXT)

When 142900 is the population what is the highest rank?
SELECT MAX("Rank") FROM table_25794 WHERE "Population" = '142900'
SELECT MAX("Rank") FROM "table_25794" WHERE "Population" = '142900'