Numbers / 41

The Number 41

41 is prime: only 1 and 41 divide it evenly; the next prime after 41 is 43. 41's proper divisors total just 1, 40 short of 41, the deficient case most of 41's neighbors share too. 41 has a digit sum of 5; for 41, the digital root works out to 5. 41 shares no factor with 2-12; 41's own divisors start beyond that range. 41 is 101001 in binary and 29 in hex; as a Roman numeral it's XLI.