1126 = 2 x 563.
1126 is the number of 3 x 4 checkerboards in which the set of red squares is edge-connected.
1126 is the sum of the first 15 Sophie Germain primes.
11263 (1427628376) includes the digits of 11262 (1267876).
In the year 1126, Adelard of Bath translated Muhammad ibn-Musa al-Kwarizmi's arithmetic and astronomical tables into Latin.
Source: On-Line Encyclopedia of Integer Sequences