What number multiplied by itself equals 420?

Here we will answer: What number multiplied by itself gives 420? In other words, what number times itself will equal 420?

We have identified many different ways of getting the answer to this question:

Algebra Method:
Make an algebra equation and solve for x:

x • x = 420
x ≈ 20.494

Square Root Method:
Take the square root of 420 to get the answer:

√420 ≈ 20.494

Exponent Method:
Make the base 420 and the exponent 0.5 to get the answer:

420^0.5 ≈ 20.494

There you go! Now you know how to calculate "What number multiplied by itself equals 420?"

The bottom line is that 20.494 times itself equals approximately 420 as illustrated here:

20.494 x 20.494 ≈ 420

Multiplied By Itself Equals Calculator
Need to calculate what number multiplied by itself equals another number? Please enter it below.

What number multiplied by itself equals 421?
Learn about the next number on our list here!

Note:
The answer on this page is rounded to the nearest thousandth, if necessary.