42 squared

42² = 42 × 42 = 1,764

To square a number, multiply it by itself. 42 squared is written 42² or 42^2, and the answer is 1,764.

How to work out 42 squared

• Direct: 42 × 42 = 1,764.
• From the previous square: 41² = 1,681, and 42² = 1,681 + (2 × 42 − 1) = 1,681 + 83 = 1,764.
• Split the number: 42 = 40 + 2, so 42² = 40² + 2 × 40 × 2 + 2² = 1,600 + 160 + 4 = 1,764.

Related

• 42 cubed = 74,088
• The square root of 1,764 is 42, so 1,764 is a perfect square.

Squares near 42

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