Live analysis

121,521

121,521 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.).

121,521 (one hundred twenty-one thousand five hundred twenty-one) is an odd 6-digit number. It is a composite number with 4 divisors, and factors as 3 × 40,507. Written other ways, in hexadecimal, 0x1DAB1.

Arithmetic Number Cube-Free Deficient Number Evil Number Semiprime Squarefree

Interestingness

★ ★ ☆ ☆ ☆

4 notable facts · grade D

121,509 121,510 121,511 121,512 121,513 121,514 121,515 121,516 121,517 121,518 121,519 121,520 121,521 121,522 121,523 121,524 121,525 121,526 121,527 121,528 121,529 121,530 121,531 121,532 121,533

less more

Properties

Parity: Odd
Digit count: 6
Digit sum: 12
Digit product: 20
Digital root: 3
Palindrome: No
Bit width: 17 bits
Reversed: 125,121
Square (n²): 14,767,353,441
Cube (n³): 1,794,543,557,503,761
Divisor count: 4
σ(n) — sum of divisors: 162,032
φ(n) — Euler's totient: 81,012
Sum of prime factors: 40,510

Primality

Prime factorization: 3 × 40507

Nearest primes: 121,507 (−14) · 121,523 (+2)

Divisors & multiples

All divisors (4)

1 · 3 · 40507 · 121521

Aliquot sum (sum of proper divisors): 40,511

Factor pairs (a × b = 121,521)

1 × 121521

3 × 40507

First multiples

121,521 · 243,042 (double) · 364,563 · 486,084 · 607,605 · 729,126 · 850,647 · 972,168 · 1,093,689 · 1,215,210

Sums & aliquot sequence

As consecutive integers: 60,760 + 60,761 40,506 + 40,507 + 40,508 20,251 + 20,252 + 20,253 + 20,254 + 20,255 + 20,256

Aliquot sequence: 121,521 → 40,511 → 2,401 → 400 → 561 → 303 → 105 → 87 → 33 → 15 → 9 → 4 → 3 → 1 → 0 — terminates at zero

Continued fraction of √n

√121,521 = [348; (1, 1, 2, 28, 1, 1, 1, 5, 1, 42, 1, 2, 1, 1, 1, 2, 1, 6, 1, 1, 6, 5, 1, 10, …)]

Representations

In words: one hundred twenty-one thousand five hundred twenty-one
Ordinal: 121521st
Binary: 11101101010110001
Octal: 355261
Hexadecimal: 0x1DAB1
Base64: Adqx
One's complement: 4,294,845,774 (32-bit)
Scientific notation: 1.21521 × 10⁵
As a duration: 121,521 s = 1 day, 9 hours, 45 minutes, 21 seconds

In other bases

ternary (3) 20011200210

quaternary (4) 131222301

quinary (5) 12342041

senary (6) 2334333

septenary (7) 1014201

nonary (9) 204623

undecimal (11) 83334

duodecimal (12) 5a3a9

tridecimal (13) 4340a

tetradecimal (14) 32401

pentadecimal (15) 26016

As an angle

121,521° = 337 × 360° + 201°

201° ≈ 3.508 rad

Compass bearing: SSW (south-southwest)

Why does a circle have 360 degrees? →

Historical numeral systems

Babylonian (base 60): 𒌋𒌋𒌋𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹
Egyptian hieroglyphic: 𓆐𓂍𓂍𓆼𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓏺
Greek (Milesian): ͵ρκαφκαʹ
Mayan (base 20): 𝋯·𝋣·𝋰·𝋡
Chinese: 一十二萬一千五百二十一
Chinese (financial): 壹拾貳萬壹仟伍佰貳拾壹

In other modern scripts

Eastern Arabic ١٢١٥٢١ Devanagari १२१५२१ Bengali ১২১৫২১ Tamil ௧௨௧௫௨௧ Thai ๑๒๑๕๒๑ Tibetan ༡༢༡༥༢༡ Khmer ១២១៥២១ Lao ໑໒໑໕໒໑ Burmese ၁၂၁၅၂၁

Also seen as

Hex color

#01DAB1

RGB(1, 218, 177)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.1.218.177.

Address: 0.1.218.177
Class: reserved
IPv4-mapped IPv6: ::ffff:0.1.218.177

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 121,521 and was likely granted around 1871.

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

Look up US121,521 on Google Patents ↗ Look up on USPTO ↗

Position in π

The digit sequence 121521 first appears in π at position 522,087 of the decimal expansion (the 522,087ordinal-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 121521 on Pi Search ↗