Number

242

242 is a composite number, even, a calendar year.

Deficient Number Gapful Number Odious Number Palindrome Pernicious Number Recamán's Sequence Year

Historical context — 242 AD

Calendar year

Year 242 (CCXLII) was a common year starting on Saturday of the Julian calendar.

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Historical context — 242 BC

Calendar year

Year 242 BC was a year of the pre-Julian Roman calendar.

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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: Saturday
January 1, 242
Ended on: Saturday
December 31, 242
Friday the 13ths: 1
One Friday the 13th this year.
Decade: 240s
240–249
Century: 3rd century
201–300
Millennium: 1st millennium
1–1000
Years ago: 1,784
1784 years before 2026.

In other calendars

Hebrew: 4002 / 4003 AM
Rosh Hashanah falls in September/October.
Chinese: Year of the zodiac:Water zodiac:Dog
Sexagenary cycle position 59 of 60. Lunar new year falls in late January / mid-February.
Buddhist Era: 785 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
Ethiopian: 234 / 235 ET
Year boundary at Enkutatash (September 11/12).
Indian National (Saka): 164 / 163 Saka
Indian national calendar; year starts in March.

Properties

Parity: Even
Digit count: 3
Digit sum: 8
Digit product: 16
Digital root: 8
Palindrome: Yes
Bit width: 8 bits
Recamán's sequence: a(259) = 242
Square (n²): 58,564
Cube (n³): 14,172,488
Divisor count: 6
σ(n) — sum of divisors: 399
φ(n) — Euler's totient: 110
Sum of prime factors: 24

Primality

Prime factorization: 2 × 11 ²

Nearest primes: 241 (−1) · 251 (+9)

Divisors & multiples

All divisors (6)

1 · 2 · 11 · 22 · 121 (half) · 242

Aliquot sum (sum of proper divisors): 157

Factor pairs (a × b = 242)

1 × 242

2 × 121

11 × 22

First multiples

242 · 484 (double) · 726 · 968 · 1,210 · 1,452 · 1,694 · 1,936 · 2,178 · 2,420

Sums & aliquot sequence

As a sum of two squares: 11² + 11²

As consecutive integers: 59 + 60 + 61 + 62 17 + 18 + … + 27

Aliquot sequence: 242 → 157 → 1 → 0 — terminates at zero

Representations

In words: two hundred forty-two
Ordinal: 242nd
Roman numeral: CCXLII
Binary: 11110010
Octal: 362
Hexadecimal: 0xF2
Base64: 8g==
One's complement: 13 (8-bit)

In other bases

ternary (3) 22222

quaternary (4) 3302

quinary (5) 1432

senary (6) 1042

septenary (7) 464

nonary (9) 288

undecimal (11) 200

duodecimal (12) 182

tridecimal (13) 158

tetradecimal (14) 134

pentadecimal (15) 112

Historical numeral systems

Babylonian (base 60): 𒁹𒁹𒁹𒁹 𒁹𒁹
Egyptian hieroglyphic: 𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺
Greek (Milesian): σμβʹ
Mayan (base 20): 𝋬·𝋢
Chinese: 二百四十二
Chinese (financial): 貳佰肆拾貳

In other modern scripts

Eastern Arabic ٢٤٢ Devanagari २४२ Bengali ২৪২ Tamil ௨௪௨ Thai ๒๔๒ Tibetan ༢༤༢ Khmer ២៤២ Lao ໒໔໒ Burmese ၂၄၂

Digit at this position in famous constants

π — Pi (π): Digit 242 = 2
e — Euler's number (e): Digit 242 = 7
φ — Golden ratio (φ): Digit 242 = 5
√2 — Pythagoras's (√2): Digit 242 = 6
ln 2 — Natural log of 2: Digit 242 = 5
γ — Euler-Mascheroni (γ): Digit 242 = 1

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 242, here are decompositions:

3 + 239 = 242
13 + 229 = 242
19 + 223 = 242
31 + 211 = 242
43 + 199 = 242
61 + 181 = 242
79 + 163 = 242
103 + 139 = 242

Showing the first eight; more decompositions exist.

Unicode codepoint

Latin Small Letter O With Grave

U+00F2

Lowercase letter (Ll)

UTF-8 encoding: C3 B2 (2 bytes).

Lookup U+00F2 on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#0000F2

RGB(0, 0, 242)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.0.242.

Address: 0.0.0.242
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.0.242

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

NANP area code 242

The number 242 is an active NANP area code (North American Numbering Plan).

Primary area: Statewide
Region: Bahamas
Country: Bahamas

Most NANP area codes have multiple overlays in dense regions; the primary area listed is the historic/largest population center for this code.

Look up area code 242 ↗