Infolity
  1. Home
  2. Calculators
  3. Square Root

What is the Square Root of 20921?

The square root of 20921 is 144.6409347315. Calculate another value or review the exact form, nearby perfect powers, and verification.

Answer

Square Root√20921 = 144.6409347315
CalculatedNon-perfect squareIrrational
Exact form√20921
Perfect squareNo
Number typeIrrational
Verification144.64093473152 ≈ 20921

On this page

How the answer is calculated

We solve x2 = 20921. The resulting value is x = 144.6409347315.

Verification: 144.64093473152 ≈ 20921.

Simplified radical form

The square root of 20921 in simplified radical form is √20921.

There are no square factors that can be taken outside the radical, so √20921 is already in simplest radical form.

Nearest Perfect squares

PositionBaseValue
Lower or equal14420736
Upper or equal14521025

Nearby square roots

NumberSquare root
√20918144.6305638515
√20919144.6340208941
√20920144.6374778541
√20921144.6409347315
√20922144.6443915263
√20923144.6478482384
√20924144.6513048679

Number properties

Is 20921 a perfect square?

No. Its square root is not a whole number.

Is the square root rational or irrational?

√20921 is irrational because 20921 is not a perfect square.

Visual guide

Square Root function graph

See how the result changes as the input moves across positive and negative values. Square roots are shown for non-negative inputs; cube roots continue through negative inputs.

Common questions

Frequently asked questions

It asks for the number that, when raised to the power of 2, equals 20921.