139 squared

139² = 139 × 139 = 19,321

To square a number, multiply it by itself. 139 squared is written 139² or 139^2, and the answer is 19,321.

How to work out 139 squared

• Direct: 139 × 139 = 19,321.
• From the previous square: 138² = 19,044, and 139² = 19,044 + (2 × 139 − 1) = 19,044 + 277 = 19,321.
• Split the number: 139 = 130 + 9, so 139² = 130² + 2 × 130 × 9 + 9² = 16,900 + 2,340 + 81 = 19,321.

Related

• 139 cubed = 2,685,619
• The square root of 19,321 is 139, so 19,321 is a perfect square.

Squares near 139

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