3442

3442 = 2 x 1721.

3442 is a semiprime with a prime sum of decimal digits and a prime sum of prime factors (A108610).

3442 is exactly between the nearest square and the nearest triangular number (A233074).

3442 is the number of three-dimensional polyominoes with 8 cells (A006766).

3442 has a representation as a sum of two squares: 3442 = 29² + 51².

Source: OEIS