Live analysis

142,821

142,821 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.).

142,821 (one hundred forty-two thousand eight hundred twenty-one) is an odd 6-digit number. It is a composite number with 12 divisors, and factors as 3² × 7 × 2,267. Written other ways, in hexadecimal, 0x22DE5.

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

Interestingness

★ ☆ ☆ ☆ ☆

3 notable facts · grade F

142,809 142,810 142,811 142,812 142,813 142,814 142,815 142,816 142,817 142,818 142,819 142,820 142,821 142,822 142,823 142,824 142,825 142,826 142,827 142,828 142,829 142,830 142,831 142,832 142,833

less more

Properties

Parity: Odd
Digit count: 6
Digit sum: 18
Digit product: 128
Digital root: 9
Palindrome: No
Bit width: 18 bits
Reversed: 128,241
Recamán's sequence: a(222,774) = 142,821
Square (n²): 20,397,838,041
Cube (n³): 2,913,239,626,853,661
Divisor count: 12
σ(n) — sum of divisors: 235,872
φ(n) — Euler's totient: 81,576
Sum of prime factors: 2,280

Primality

Prime factorization: 3 ² × 7 × 2267

Nearest primes: 142,811 (−10) · 142,837 (+16)

Divisors & multiples

All divisors (12)

1 · 3 · 7 · 9 · 21 · 63 · 2267 · 6801 · 15869 · 20403 · 47607 · 142821

Aliquot sum (sum of proper divisors): 93,051

Factor pairs (a × b = 142,821)

1 × 142821

3 × 47607

7 × 20403

9 × 15869

21 × 6801

63 × 2267

First multiples

142,821 · 285,642 (double) · 428,463 · 571,284 · 714,105 · 856,926 · 999,747 · 1,142,568 · 1,285,389 · 1,428,210

Sums & aliquot sequence

As consecutive integers: 71,410 + 71,411 47,606 + 47,607 + 47,608 23,801 + 23,802 + 23,803 + 23,804 + 23,805 + 23,806 20,400 + 20,401 + … + 20,406

Aliquot sequence: 142,821 → 93,051 → 64,041 → 21,351 → 9,753 → 3,255 → 2,889 → 1,431 → 729 → 364 → 420 → 924 → 1,764 → 3,423 → 1,825 → 469 → 75 — unresolved within range

Continued fraction of √n

√142,821 = [377; (1, 10, 1, 754)]

Period length 4 — the block in parentheses repeats forever.

Representations

In words: one hundred forty-two thousand eight hundred twenty-one
Ordinal: 142821st
Binary: 100010110111100101
Octal: 426745
Hexadecimal: 0x22DE5
Base64: Ai3l
One's complement: 4,294,824,474 (32-bit)
Scientific notation: 1.42821 × 10⁵
As a duration: 142,821 s = 1 day, 15 hours, 40 minutes, 21 seconds

In other bases

ternary (3) 21020220200

quaternary (4) 202313211

quinary (5) 14032241

senary (6) 3021113

septenary (7) 1133250

nonary (9) 236820

undecimal (11) 98338

duodecimal (12) 6a799

tridecimal (13) 50013

tetradecimal (14) 3a097

pentadecimal (15) 2c4b6

As an angle

142,821° = 396 × 360° + 261°

261° ≈ 4.555 rad

Compass bearing: W (west)

Why does a circle have 360 degrees? →

Historical numeral systems

Babylonian (base 60): 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋 𒌋𒌋𒁹
Egyptian hieroglyphic: 𓆐𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓏺
Greek (Milesian): ͵ρμβωκαʹ
Mayan (base 20): 𝋱·𝋱·𝋡·𝋡
Chinese: 一十四萬二千八百二十一
Chinese (financial): 壹拾肆萬貳仟捌佰貳拾壹

In other modern scripts

Eastern Arabic ١٤٢٨٢١ Devanagari १४२८२१ Bengali ১৪২৮২১ Tamil ௧௪௨௮௨௧ Thai ๑๔๒๘๒๑ Tibetan ༡༤༢༨༢༡ Khmer ១៤២៨២១ Lao ໑໔໒໘໒໑ Burmese ၁၄၂၈၂၁

Also seen as

Unicode codepoint

𢷥

CJK Unified Ideograph-22De5

U+22DE5

Other letter (Lo)

UTF-8 encoding: F0 A2 B7 A5 (4 bytes).

Lookup U+22DE5 on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#022DE5

RGB(2, 45, 229)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.2.45.229.

Address: 0.2.45.229
Class: reserved
IPv4-mapped IPv6: ::ffff:0.2.45.229

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

Possible US patent number

This number falls in the range of US utility patent numbers. If it's a patent, it would be issued as US 142,821 and was likely granted around 1872.

Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.

Look up US142,821 on Google Patents ↗ Look up on USPTO ↗

Position in π

The digit sequence 142821 first appears in π at position 144,135 of the decimal expansion (the 144,135ordinal-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 142821 on Pi Search ↗