2,040
2,040 is a composite number, even, a calendar year.
Historical context — 2040 AD
Current millennium spanning the years 2001 to 3000
The third millennium of the Anno Domini or Common Era is the current millennium spanning the years 2001 to 3000.
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Year facts
- Year type
-
Leap year
Divisible by 4 and not by 100; February has 29 days.
- Days in year
- 366
- ISO weeks
- 52
- Started on
-
Sunday
January 1, 2040
- Ended on
-
Monday
December 31, 2040
- Friday the 13ths
-
3
3 Friday the 13ths this year.
- Easter Sunday
-
April 1
Sunday, April 1, 2040
- Decade
-
2040s
2040–2049
- Century
-
21st century
2001–2100
- Millennium
-
3rd millennium
2001–3000
- Years until
-
14
14 years after 2026.
- US presidential election
-
Yes
US holds a presidential election in years divisible by 4 starting from 1788.
- Summer Olympics
- Yes
In other calendars
- Hebrew
-
5800 / 5801 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
1461 / 1462 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Metal zodiac:Monkey
Sexagenary cycle position 57 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
2583 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
1418 / 1419 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
2032 / 2033 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
1962 / 1961 Saka
Indian national calendar; year starts in March.
- Japanese
-
Reiwa 22
Reign-era counting from the start of each emperor's reign.
Properties
Primality
Prime factorization: 2 3 × 3 × 5 × 17
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- two thousand forty
- Ordinal
- 2040th
- Roman numeral
- MMXL
- Binary
- 11111111000
- Octal
- 3770
- Hexadecimal
- 0x7F8
- Base64
- B/g=
- One's complement
- 63,495 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹 ·
- Egyptian hieroglyphic
- 𓆼𓆼𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵βμʹ
- Mayan (base 20)
- 𝋥·𝋢·𝋠
- Chinese
- 二千零四十
- Chinese (financial)
- 貳仟零肆拾
Digit at this position in famous constants
- π — Pi (π)
- Digit 2,040 = 2
- e — Euler's number (e)
- Digit 2,040 = 9
- φ — Golden ratio (φ)
- Digit 2,040 = 5
- √2 — Pythagoras's (√2)
- Digit 2,040 = 3
- ln 2 — Natural log of 2
- Digit 2,040 = 9
- γ — Euler-Mascheroni (γ)
- Digit 2,040 = 0
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 2040, here are decompositions:
- 11 + 2029 = 2040
- 13 + 2027 = 2040
- 23 + 2017 = 2040
- 29 + 2011 = 2040
- 37 + 2003 = 2040
- 41 + 1999 = 2040
- 43 + 1997 = 2040
- 47 + 1993 = 2040
Showing the first eight; more decompositions exist.
UTF-8 encoding: DF B8 (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.7.248.
- Address
- 0.0.7.248
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.7.248
Unspecified address (0.0.0.0/8) — "this network" placeholder.
This passes the ABA routing number checksum and matches the Federal Reserve numbering scheme.
Banks operate many routing numbers per state and division; an unmatched checksum-valid number can still be a real RTN at a smaller institution.
The digit sequence 2040 first appears in π at position 17,677 of the decimal expansion (the 17,677ordinal-suffix:th digit after the integer 3).
Search range: the first 1,000,000 fractional digits of π. Any 6-digit-or-shorter string is virtually guaranteed to appear in there — the more interesting signal is the position.