Number

1,241

1,241 is a composite number, odd, a calendar year.

Arithmetic Number Deficient Number Evil Number Recamán's Sequence Semiprime Squarefree Year

Notable events — 1241 AD

Apr 11 The Mongols crush Hungary at Mohi.

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: Tuesday
January 1, 1241
Ended on: Tuesday
December 31, 1241
Friday the 13ths: 2
2 Friday the 13ths this year.
Decade: 1240s
1240–1249
Century: 13th century
1201–1300
Millennium: 2nd millennium
1001–2000
Years ago: 785
785 years before 2026.

In other calendars

Hebrew: 5001 / 5002 AM
Rosh Hashanah falls in September/October.
Islamic Hijri: 638 / 639 AH
Lunar calendar; year spans differ from Gregorian.
Chinese: Year of the zodiac:Metal zodiac:Ox
Sexagenary cycle position 38 of 60. Lunar new year falls in late January / mid-February.
Buddhist Era: 1784 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
Persian Solar Hijri: 619 / 620 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
Ethiopian: 1233 / 1234 ET
Year boundary at Enkutatash (September 11/12).
Indian National (Saka): 1163 / 1162 Saka
Indian national calendar; year starts in March.

Properties

Parity: Odd
Digit count: 4
Digit sum: 8
Digit product: 8
Digital root: 8
Palindrome: No
Bit width: 11 bits
Reversed: 1,421
Recamán's sequence: a(8,506) = 1,241
Square (n²): 1,540,081
Cube (n³): 1,911,240,521
Divisor count: 4
σ(n) — sum of divisors: 1,332
φ(n) — Euler's totient: 1,152
Sum of prime factors: 90

Primality

Prime factorization: 17 × 73

Nearest primes: 1,237 (−4) · 1,249 (+8)

Divisors & multiples

All divisors (4)

1 · 17 · 73 · 1241

Aliquot sum (sum of proper divisors): 91

Factor pairs (a × b = 1,241)

1 × 1241

17 × 73

First multiples

1,241 · 2,482 (double) · 3,723 · 4,964 · 6,205 · 7,446 · 8,687 · 9,928 · 11,169 · 12,410

Sums & aliquot sequence

As a sum of two squares: 4² + 35² = 20² + 29²

As consecutive integers: 620 + 621 65 + 66 + … + 81 20 + 21 + … + 53

Aliquot sequence: 1,241 → 91 → 21 → 11 → 1 → 0 — terminates at zero

Representations

In words: one thousand two hundred forty-one
Ordinal: 1241st
Roman numeral: MCCXLI
Binary: 10011011001
Octal: 2331
Hexadecimal: 0x4D9
Base64: BNk=
One's complement: 64,294 (16-bit)

In other bases

ternary (3) 1200222

quaternary (4) 103121

quinary (5) 14431

senary (6) 5425

septenary (7) 3422

nonary (9) 1628

undecimal (11) a29

duodecimal (12) 875

tridecimal (13) 746

tetradecimal (14) 649

pentadecimal (15) 57b

Historical numeral systems

Babylonian (base 60): 𒌋𒌋 𒌋𒌋𒌋𒌋𒁹
Egyptian hieroglyphic: 𓆼𓍢𓍢𓎆𓎆𓎆𓎆𓏺
Greek (Milesian): ͵ασμαʹ
Mayan (base 20): 𝋣·𝋢·𝋡
Chinese: 一千二百四十一
Chinese (financial): 壹仟貳佰肆拾壹

In other modern scripts

Eastern Arabic ١٢٤١ Devanagari १२४१ Bengali ১২৪১ Tamil ௧௨௪௧ Thai ๑๒๔๑ Tibetan ༡༢༤༡ Khmer ១២៤១ Lao ໑໒໔໑ Burmese ၁၂၄၁

Digit at this position in famous constants

π — Pi (π): Digit 1,241 = 9
e — Euler's number (e): Digit 1,241 = 4
φ — Golden ratio (φ): Digit 1,241 = 5
√2 — Pythagoras's (√2): Digit 1,241 = 7
ln 2 — Natural log of 2: Digit 1,241 = 8
γ — Euler-Mascheroni (γ): Digit 1,241 = 0

Also seen as

Unicode codepoint

Cyrillic Small Letter Schwa

U+04D9

Lowercase letter (Ll)

UTF-8 encoding: D3 99 (2 bytes).

Lookup U+04D9 on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#0004D9

RGB(0, 4, 217)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.4.217.

Address: 0.0.4.217
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.4.217

Unspecified address (0.0.0.0/8) — "this network" placeholder.

Position in π

The digit sequence 1241 first appears in π at position 8,619 of the decimal expansion (the 8,619ordinal-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.

Look up 1241 on Pi Search ↗