842

842 = 2 x 421.

842 has a representation as a sum of two squares: 842 = 1² + 29².

842 is a semiprime sandwiched between semiprimes: 841 = 29², 842 = 2 x 421, 843 = 3 x 281.

842 is a centered square number.

The largest swordfish ever caught (in 1936) weighed 842 pounds.

Source: On-Line Encyclopedia of Integer Sequences