| Millennium: | 1st millennium |
|---|---|
| Centuries: | 1st century – 2nd century – 3rd century |
| Decades: | 110s 120s 130s – 140s – 150s 160s 170s |
| Years: | 139 140 141 – 142 – 143 144 145 |
| 142 by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishment and disestablishment categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 142 CXLII |
| Ab urbe condita | 895 |
| Armenian calendar | N/A |
| Bahá'í calendar | -1702 – -1701 |
| Bengali calendar | -451 |
| Berber calendar | 1092 |
| Buddhist calendar | 686 |
| Burmese calendar | -496 |
| Byzantine calendar | 5650 – 5651 |
| Chinese calendar | 辛巳年十一月十七日 (2778/2838-11-17) — to —
壬午年十一月廿六日(2779/2839-11-26) |
| Coptic calendar | -142 – -141 |
| Ethiopian calendar | 134 – 135 |
| Hebrew calendar | 3902 – 3903 |
| Hindu calendars | |
| - Bikram Samwat | 198 – 199 |
| - Shaka Samvat | 64 – 65 |
| - Kali Yuga | 3243 – 3244 |
| Holocene calendar | 10142 |
| Iranian calendar | 480 BP – 479 BP |
| Islamic calendar | 495 BH – 494 BH |
| Japanese calendar | |
| Korean calendar | 2475 |
| Thai solar calendar | 685 |
Year 142 (CXLII) was a common year starting on Sunday (link will display the full calendar) of the Julian calendar.