27430 is a member of OEIS A107085: numbers n such that in decimal representation the largest digit is equal to the digital root, here 7; the digital root (7) is also different to that of any of its prime factors. See entry for 27340.

27430 can be rendered as a digit equation as follows:

2 * (7 - 4 - 3) = 0

27430 stabilises after a little over 1000 generations of Conway's Game of Life to two gliders and a series of oscillating blinkers and traffic lights and an assortment of still life shapes.