. . . . . . . . . . . . . . "1123860024"^^ . . . . . . . . . . . "A sum-product number in a given number base is a natural number that is equal to the product of the sum of its digits and the product of its digits. There are a finite number of sum-product numbers in any given base . In base 10, there are exactly four sum-product numbers (sequence in the OEIS): 0, 1, 135, and 144."@en . . . . . . . . "Sum-product number"@en . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "A sum-product number in a given number base is a natural number that is equal to the product of the sum of its digits and the product of its digits. There are a finite number of sum-product numbers in any given base . In base 10, there are exactly four sum-product numbers (sequence in the OEIS): 0, 1, 135, and 144."@en . "4424438"^^ . . . . . "7356"^^ . . . . . . . . . . . . . . . .