Recognised as Decimal number

-420.5

Negative
Decimal
1 d.p.
Exact fraction
4 s.f.

-420.5 is a decimal number equal to -841⁄2. It lies between -421 and -420, and as a percentage it is -42,050%.

Number properties

Absolute value420.5

SignNegative

Integer part-420

Fractional part0.5

Decimal places1

Floor-421

Ceiling-420

Rounded to nearest-420

Truncated-420

Fractions & ratios

As a fraction-841/2exact

Ratio-841 : 2

As a percentage-42,050%

Reciprocal-0.0023781213≈

Arithmetic

Double-841

Half-210.25

Square176,820.25

Cube-74,352,915.125

Cube root-7.4918429835≈

Negation420.5

Representations

Decimal-420.5

Scientific notation-4.205 × 10^2

Exponential-4.205e+2

IEEE 754 binary64 (hex)0xC07A480000000000the exact 64-bit pattern stored

IEEE 754 binary32 (hex)0xC3D2400032-bit single precision, may lose accuracy

Stored as-420.5the nearest binary64 value to what you typed

Rounding & precision

Significant figures as written4counted from the digits as typed, not from the value

To 0 decimal places-421

To 1 decimal place-420.5

To 2 decimal places-420.50

To 3 decimal places-420.500

To 4 decimal places-420.5000

To 1 significant figure-4e+2

To 2 significant figures-4.2e+2

To 3 significant figures-421

To 4 significant figures-420.5

Keep nerding

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