1,206
1,206 is a composite number, even, a calendar year.
Notable events — 1206 AD
- Undated Temüjin is proclaimed Genghis Khan, founding the Mongol Empire.
Events compiled from Wikipedia ↗ · Licensed CC BY-SA 4.0
Year facts
- Year type
-
Common year
Standard 365-day year; not divisible by 4 (or divisible by 100 but not 400).
- Days in year
- 365
- ISO weeks
- 52
- Started on
-
Sunday
January 1, 1206
- Ended on
-
Sunday
December 31, 1206
- Friday the 13ths
-
2
2 Friday the 13ths this year.
- Decade
-
1200s
1200–1209
- Century
-
13th century
1201–1300
- Millennium
-
2nd millennium
1001–2000
- Years ago
-
820
820 years before 2026.
In other calendars
- Hebrew
-
4966 / 4967 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
602 / 603 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Fire zodiac:Tiger
Sexagenary cycle position 3 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
1749 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
584 / 585 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
1198 / 1199 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
1128 / 1127 Saka
Indian national calendar; year starts in March.
Properties
- Parity
- Even
- Digit count
- 4
- Digit sum
- 9
- Digit product
- 0
- Digital root
- 9
- Palindrome
- No
- Bit width
- 11 bits
- Reversed
- 6,021
- Recamán's sequence
- a(8,576) = 1,206
- Square (n²)
- 1,454,436
- Cube (n³)
- 1,754,049,816
- Divisor count
- 12
- σ(n) — sum of divisors
- 2,652
- φ(n) — Euler's totient
- 396
- Sum of prime factors
- 75
Primality
Prime factorization: 2 × 3 2 × 67
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- one thousand two hundred six
- Ordinal
- 1206th
- Roman numeral
- MCCVI
- Binary
- 10010110110
- Octal
- 2266
- Hexadecimal
- 0x4B6
- Base64
- BLY=
- One's complement
- 64,329 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋 𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓍢𓍢𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ασϛʹ
- Mayan (base 20)
- 𝋣·𝋠·𝋦
- Chinese
- 一千二百零六
- Chinese (financial)
- 壹仟貳佰零陸
Digit at this position in famous constants
- π — Pi (π)
- Digit 1,206 = 6
- e — Euler's number (e)
- Digit 1,206 = 9
- φ — Golden ratio (φ)
- Digit 1,206 = 6
- √2 — Pythagoras's (√2)
- Digit 1,206 = 6
- ln 2 — Natural log of 2
- Digit 1,206 = 2
- γ — Euler-Mascheroni (γ)
- Digit 1,206 = 5
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1206, here are decompositions:
- 5 + 1201 = 1206
- 13 + 1193 = 1206
- 19 + 1187 = 1206
- 43 + 1163 = 1206
- 53 + 1153 = 1206
- 83 + 1123 = 1206
- 89 + 1117 = 1206
- 97 + 1109 = 1206
Showing the first eight; more decompositions exist.
UTF-8 encoding: D2 B6 (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.4.182.
- Address
- 0.0.4.182
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.4.182
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 1206 first appears in π at position 3,258 of the decimal expansion (the 3,258ordinal-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.