1422
1422 is a year in the 15th century. Henry V and Charles VI died within two months, leaving an infant claimant to both crowns (France and England).
- Even
- Composite
Where 1422 fits
Why 1422 is special
1422 has a profile because of what happened in it rather than because of any property of the number: Henry V and Charles VI died within two months, leaving an infant claimant to both crowns (France and England).
1422 is part of
Factors & digit properties
- Divisors (12)
- 1, 2, 3, 6, 9, 18, 79, 158, 237, 474, 711, 1422
- Prime factorisation
- 2 × 3^2 × 79
- Digit sum
- 9
- Digital root
- 9
Representations
- Decimal
- 1422
- Scientific notation
- 1.422 × 10^3
Roman numerals
M C D X X I I
MCDXXII uses the subtractive pair CD: a hundred before five hundred — five hundred minus a hundred.
Binary
1 0 1 1 0 0 0 1 1 1 0
1 × 1,024 + 0 × 512 + 1 × 256 + 1 × 128 + 0 × 64 + 0 × 32 + 0 × 16 + 1 × 8 + 1 × 4 + 1 × 2 + 0 × 1 = 1,422
Octal
2 6 1 6
2 × 512 + 6 × 64 + 1 × 8 + 6 × 1 = 1,422
Hexadecimal
5 8 e
5 × 256 + 8 × 16 + e × 1 = 1,422
Read as powers of two: 1,024 + 256 + 128 + 8 + 4 + 2 = 1,422.
In historical numeral systems
Egyptian
1 lotus, 4 coils of rope, 2 hobbles, 2 strokes
1 × 1,000 + 4 × 100 + 2 × 10 + 2 × 1 = 1,422. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Babylonian
2 corner wedges + 3 vertical wedges (sixties place), 4 corner wedges + 2 vertical wedges (units place)
23 × 60 + 42 = 1422. Places are separated by a space on the tablet, with the higher place written first.
Systems that simply cannot reach this value are left out. Where a script needs a font most readers do not have, the reading is given instead of the glyphs — see number systems for each system in full.
Other mathematical patterns
- Abundant number
- Harshad (Niven) number
Related numbers & connections
1422 is a year in the 15th century, in the 1420s.
Numbers Around Us
- appears inHistorical years
why?
Strength 0.50, confidence "high".
History
In 1422, Henry V and Charles VI died within two months, leaving an infant claimant to both crowns (France and England).
DocumentedHistoryGeography: France and EnglandPeriod: 1422
Common questions
Is 1422 a prime number?
No, 1422 is not prime.
What are the factors of 1422?
The factors of 1422 are 1, 2, 3, 6, 9, 18, 79, 158, 237, 474, 711, 1422.
What is 1422 in Roman numerals?
1422 in Roman numerals is MCDXXII. CD is subtractive: a hundred before five hundred — five hundred minus a hundred. Written additively it would be MCCCCXXII, which Roman inscriptions used freely — the strict subtractive form is a later convention.
About this page's data
Mathematical facts:computed directly from the number's value — nothing to source or verify externally.
Contextual records: 1 reviewer-confirmed record, sourced and reviewed before publication.
Last reviewed: 15 July 2026