Number
42,409
42,409 is a prime, odd.
Properties
- Parity
- Odd
- Digit count
- 5
- Digit sum
- 19
- Digit product
- 0
- Digital root
- 1
- Palindrome
- No
- Bit width
- 16 bits
- Reversed
- 90,424
- Recamán's sequence
- a(150,805) = 42,409
- Square (n²)
- 1,798,523,281
- Cube (n³)
- 76,273,573,823,929
- Divisor count
- 2
- σ(n) — sum of divisors
- 42,410
- φ(n) — Euler's totient
- 42,408
Primality
42,409 is prime. It has exactly two divisors: 1 and itself.
Divisors & multiples
Aliquot sum (sum of proper divisors):
1
First multiples
42,409
·
84,818
(double)
·
127,227
·
169,636
·
212,045
·
254,454
·
296,863
·
339,272
·
381,681
·
424,090
Sums & aliquot sequence
As a sum of two squares:
60² + 197²
As consecutive integers:
21,204 + 21,205
Representations
- In words
- forty-two thousand four hundred nine
- Ordinal
- 42409th
- Binary
- 1010010110101001
- Octal
- 122651
- Hexadecimal
- 0xA5A9
- Base64
- pak=
- One's complement
- 23,126 (16-bit)
In other bases
ternary (3)
2011011201
quaternary (4)
22112221
quinary (5)
2324114
senary (6)
524201
septenary (7)
234433
nonary (9)
64151
undecimal (11)
29954
duodecimal (12)
20661
tridecimal (13)
163c3
tetradecimal (14)
11653
pentadecimal (15)
c874
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵μβυθʹ
- Mayan (base 20)
- 𝋥·𝋦·𝋠·𝋩
- Chinese
- 四萬二千四百零九
- Chinese (financial)
- 肆萬貳仟肆佰零玖
In other modern scripts
Eastern Arabic
٤٢٤٠٩
Devanagari
४२४०९
Bengali
৪২৪০৯
Tamil
௪௨௪௦௯
Thai
๔๒๔๐๙
Tibetan
༤༢༤༠༩
Khmer
៤២៤០៩
Lao
໔໒໔໐໙
Burmese
၄၂၄၀၉
Digit at this position in famous constants
- π — Pi (π)
- Digit 42,409 = 9
- e — Euler's number (e)
- Digit 42,409 = 3
- φ — Golden ratio (φ)
- Digit 42,409 = 7
- √2 — Pythagoras's (√2)
- Digit 42,409 = 4
- ln 2 — Natural log of 2
- Digit 42,409 = 6
- γ — Euler-Mascheroni (γ)
- Digit 42,409 = 7
Also seen as
Prime neighborhood
Unicode codepoint
ꖩ
Vai Syllable Ru
U+A5A9
Other letter (Lo)
UTF-8 encoding: EA 96 A9 (3 bytes).
Hex color
#00A5A9
RGB(0, 165, 169)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.165.169.
- Address
- 0.0.165.169
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.165.169
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Position in π
The digit sequence 42409 first appears in π at position 34,062 of the decimal expansion (the 34,062ordinal-suffix:nd 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.