Recognised as Decimal number

421.5

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

421.5 is a decimal number equal to 843⁄2. It lies between 421 and 422, and as a percentage it is 42,150%.

Number properties

Absolute value421.5

SignPositive

Integer part421

Fractional part0.5

Decimal places1

Floor421

Ceiling422

Rounded to nearest422

Truncated421

Fractions & ratios

As a fraction843/2exact

Ratio843 : 2

As a percentage42,150%

Reciprocal0.0023724792≈

Arithmetic

Double843

Half210.75

Square177,662.25

Cube74,884,638.375

Square root20.5304651676≈

Cube root7.497777119≈

Negation-421.5

Natural logarithm6.0438197774≈

Logarithm base 102.624797579≈

Representations

Decimal421.5

Scientific notation4.215 × 10^2

Exponential4.215e+2

IEEE 754 binary64 (hex)0x407A580000000000the exact 64-bit pattern stored

IEEE 754 binary32 (hex)0x43D2C00032-bit single precision, may lose accuracy

Stored as421.5the 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 places422

To 1 decimal place421.5

To 2 decimal places421.50

To 3 decimal places421.500

To 4 decimal places421.5000

To 1 significant figure4e+2

To 2 significant figures4.2e+2

To 3 significant figures422

To 4 significant figures421.5

Keep nerding

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