Live analysis

4,121

4,121 is a composite number, odd.

This number doesn't have a permanent NumberWiki page yet — what you see below is computed live. Pages get added to the permanent index when they're notable (years, primes, curated, etc.).

4,121 (four thousand one hundred twenty-one) is an odd 4-digit number. It is a composite number with 4 divisors, and factors as 13 × 317. Written other ways, in hexadecimal, 0x1019.

Arithmetic Number Cube-Free Deficient Number Evil Number Recamán's Sequence Semiprime Squarefree

Interestingness

★ ★ ★ ☆ ☆

5 notable facts · grade C

4,109 4,110 4,111 4,112 4,113 4,114 4,115 4,116 4,117 4,118 4,119 4,120 4,121 4,122 4,123 4,124 4,125 4,126 4,127 4,128 4,129 4,130 4,131 4,132 4,133

less more

Properties

Parity: Odd
Digit count: 4
Digit sum: 8
Digit product: 8
Digital root: 8
Palindrome: No
Bit width: 13 bits
Reversed: 1,214
Recamán's sequence: a(28,834) = 4,121
Square (n²): 16,982,641
Cube (n³): 69,985,463,561
Divisor count: 4
σ(n) — sum of divisors: 4,452
φ(n) — Euler's totient: 3,792
Sum of prime factors: 330

Primality

Prime factorization: 13 × 317

Nearest primes: 4,111 (−10) · 4,127 (+6)

Divisors & multiples

All divisors (4)

1 · 13 · 317 · 4121

Aliquot sum (sum of proper divisors): 331

Factor pairs (a × b = 4,121)

1 × 4121

13 × 317

First multiples

4,121 · 8,242 (double) · 12,363 · 16,484 · 20,605 · 24,726 · 28,847 · 32,968 · 37,089 · 41,210

Sums & aliquot sequence

As a sum of two squares: 5² + 64² = 20² + 61²

As consecutive integers: 2,060 + 2,061 311 + 312 + … + 323 146 + 147 + … + 171

Aliquot sequence: 4,121 → 331 → 1 → 0 — terminates at zero

Continued fraction of √n

√4,121 = [64; (5, 7, 1, 4, 1, 2, 2, 1, 1, 1, 2, 1, 1, 2, 1, 1, 1, 2, 2, 1, 4, 1, 7, 5, …)]

Period length 25 — the block in parentheses repeats forever.

Representations

In words: four thousand one hundred twenty-one
Ordinal: 4121st
Binary: 1000000011001
Octal: 10031
Hexadecimal: 0x1019
Base64: EBk=
One's complement: 61,414 (16-bit)
Scientific notation: 4.121 × 10³
As a duration: 4,121 s = 1 hour, 8 minutes, 41 seconds

In other bases

ternary (3) 12122122

quaternary (4) 1000121

quinary (5) 112441

senary (6) 31025

septenary (7) 15005

nonary (9) 5578

undecimal (11) 3107

duodecimal (12) 2475

tridecimal (13) 1b50

tetradecimal (14) 1705

pentadecimal (15) 134b

As an angle

4,121° = 11 × 360° + 161°

161° ≈ 2.81 rad

Compass bearing: SSE (south-southeast)

Why does a circle have 360 degrees? →

Historical numeral systems

Babylonian (base 60): 𒁹 𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹
Egyptian hieroglyphic: 𓆼𓆼𓆼𓆼𓍢𓎆𓎆𓏺
Greek (Milesian): ͵δρκαʹ
Mayan (base 20): 𝋪·𝋦·𝋡
Chinese: 四千一百二十一
Chinese (financial): 肆仟壹佰貳拾壹

In other modern scripts

Eastern Arabic ٤١٢١ Devanagari ४१२१ Bengali ৪১২১ Tamil ௪௧௨௧ Thai ๔๑๒๑ Tibetan ༤༡༢༡ Khmer ៤១២១ Lao ໔໑໒໑ Burmese ၄၁၂၁

Digit at this position in famous constants

π — Pi (π): Digit 4,121 = 7
e — Euler's number (e): Digit 4,121 = 4
φ — Golden ratio (φ): Digit 4,121 = 3
√2 — Pythagoras's (√2): Digit 4,121 = 4
ln 2 — Natural log of 2: Digit 4,121 = 9
γ — Euler-Mascheroni (γ): Digit 4,121 = 3

Also seen as

Unicode codepoint

မ

Myanmar Letter Ma

U+1019

Other letter (Lo)

UTF-8 encoding: E1 80 99 (3 bytes).

Lookup U+1019 on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#001019

RGB(0, 16, 25)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.16.25.

Address: 0.0.16.25
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.16.25

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

Musical pitch

Heard as a frequency, 4,121 Hz is closest to:

Concert pitch (A4 = 440 Hz): C8 (4186 Hz, -27¢)
Scientific pitch (C4 = 256 Hz): C8 (4096 Hz, +11¢)
Baroque pitch (A4 = 415 Hz): C♯8 (4182.9 Hz, -26¢)

Position in π

The digit sequence 4121 first appears in π at position 1,424 of the decimal expansion (the 1,424ordinal-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 4121 on Pi Search ↗