144, two to the fourth times three squared, also CXLIV in Roman numerals, 10010000 in Binary, 12100 in Ternary, 220 in Octal, 100 in Duodecimo, and 90 in Hexadecimal, is the sum of three squares (42 + 81 + 81), and of two consecutive primes (71 + 73). It is the square of 12, the 12th Fibonacci number, the only Fibonacci number (other than 1) that is a square, and the 12th square number, following 121 and preceding 169; and furthermore, the sum of its digits is a square as well. It is one of the largest numbers that has its own name (a gross) but is not a factor of 10, and the smallest number that has exactly 15 divisors. It is also the Intel 8086 instruction for “no operation,” the measurement in cubits of the wall of New Jerusalem shown by the seventh angel in Revelations 21:17, the atomic number of unquadquadium (a temporary chemical element), and the number of words in English currently known to rhyme with wolverine. Its common properties are abundant, composite, even, evil, powerful, and practical; its rare properties are Fibonacci, hungry, and square. In the same way that 17 and 37 are perceived as exceptionally random numbers, 144 is perceived as an exceptionally square one. Its big brother, 144,000, is significant in a number of different religious traditions, and a favorite with apocalyptic theoreticians.