NumberQuill

40 in words

British English

forty

Forty has no u, although four and fourteen both keep theirs.

Quick reference

In figures
40
British English
forty
American English
The same (why they differ)
Ordinal
fortieth (40th)
Roman numeral
XL
Place value
4 in the tens column
Expanded form
40
Standard form
4 × 10¹
Even or odd
Even
Prime factors
2³ × 5

Convert any other number, up to thirty-six digits.

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