1,542
1,542 is a composite number, even, a calendar year.
Notable events — 1542 AD
- Jul 21 Pope Paul III establishes the Roman Inquisition.
- Sep 28 Cabrillo enters San Diego Bay, the first European in California.
- Dec 8 Mary Queen of Scots is born; her father James V dies six days later.
Events compiled from Wikipedia ↗ · Licensed CC BY-SA 4.0
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
-
53
Long year: contains 53 ISO weeks.
- Started on
-
Thursday
January 1, 1542
- Ended on
-
Thursday
December 31, 1542
- Friday the 13ths
-
3
3 Friday the 13ths this year.
- Decade
-
1540s
1540–1549
- Century
-
16th century
1501–1600
- Millennium
-
2nd millennium
1001–2000
- Years ago
-
484
484 years before 2026.
In other calendars
- Hebrew
-
5302 / 5303 AM
Rosh Hashanah falls in September/October.
- Islamic Hijri
-
948 / 949 AH
Lunar calendar; year spans differ from Gregorian.
- Chinese
-
Year of the zodiac:Water zodiac:Tiger
Sexagenary cycle position 39 of 60. Lunar new year falls in late January / mid-February.
- Buddhist Era
-
2085 BE
Counted from the parinirvana of the Buddha (Theravada / Thai / Sri Lankan convention).
- Persian Solar Hijri
-
920 / 921 SH
Iranian calendar; Nowruz (new year) falls on the spring equinox.
- Ethiopian
-
1534 / 1535 ET
Year boundary at Enkutatash (September 11/12).
- Indian National (Saka)
-
1464 / 1463 Saka
Indian national calendar; year starts in March.
Properties
- Parity
- Even
- Digit count
- 4
- Digit sum
- 12
- Digit product
- 40
- Digital root
- 3
- Palindrome
- No
- Bit width
- 11 bits
- Reversed
- 2,451
- Recamán's sequence
- a(1,476) = 1,542
- Square (n²)
- 2,377,764
- Cube (n³)
- 3,666,512,088
- Divisor count
- 8
- σ(n) — sum of divisors
- 3,096
- φ(n) — Euler's totient
- 512
- Sum of prime factors
- 262
Primality
Prime factorization: 2 × 3 × 257
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- one thousand five hundred forty-two
- Ordinal
- 1542nd
- Roman numeral
- MDXLII
- Binary
- 11000000110
- Octal
- 3006
- Hexadecimal
- 0x606
- Base64
- BgY=
- One's complement
- 63,993 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵αφμβʹ
- Mayan (base 20)
- 𝋣·𝋱·𝋢
- Chinese
- 一千五百四十二
- Chinese (financial)
- 壹仟伍佰肆拾貳
Digit at this position in famous constants
- π — Pi (π)
- Digit 1,542 = 3
- e — Euler's number (e)
- Digit 1,542 = 5
- φ — Golden ratio (φ)
- Digit 1,542 = 2
- √2 — Pythagoras's (√2)
- Digit 1,542 = 6
- ln 2 — Natural log of 2
- Digit 1,542 = 8
- γ — Euler-Mascheroni (γ)
- Digit 1,542 = 4
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1542, here are decompositions:
- 11 + 1531 = 1542
- 19 + 1523 = 1542
- 31 + 1511 = 1542
- 43 + 1499 = 1542
- 53 + 1489 = 1542
- 59 + 1483 = 1542
- 61 + 1481 = 1542
- 71 + 1471 = 1542
Showing the first eight; more decompositions exist.
UTF-8 encoding: D8 86 (2 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.6.6.
- Address
- 0.0.6.6
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.6.6
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 1542 first appears in π at position 7,736 of the decimal expansion (the 7,736ordinal-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.