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Roman numerals are a numeral system that originated in ancient Rome and remained the usual way of writing numbers throughout Europe well into the Late Middle Ages.Numbers are written with combinations of letters from the Latin alphabet, each with a fixed integer value.
Leonhard Euler noted 65 idoneal numbers (the most known, of only a maximum possible of two more), such that + for an integer , expressible in only one way, yields a prime power or twice a prime power.
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The Latin numerals are the words used to denote numbers within the Latin language. They are essentially based on their Proto-Indo-European ancestors, and the Latin cardinal numbers are largely sustained in the Romance languages.
42 is a pronic number, [1] an abundant number [2] as well as a highly abundant number, [3] a practical number, [4] an admirable number, [5] and a Catalan number. [6]The 42-sided tetracontadigon is the largest such regular polygon that can only tile a vertex alongside other regular polygons, without tiling the plane.
116 is a noncototient, meaning that there is no solution to the equation m − φ(m) = n, where φ stands for Euler's totient function. [1]116! + 1 is a factorial prime. [2] ...
62 as the sum of three distinct positive squares. 62 is: . the eighteenth discrete semiprime and tenth of the form (2.q), where q is a higher prime.; with an aliquot sum of 34; itself a semiprime, within an aliquot sequence of seven composite numbers (62,34,20,22,14,10,8,7,1,0) to the Prime in the 7-aliquot tree.
210 is an abundant number, [1] and Harshad number. It is the product of the first four prime numbers (2, 3, 5, and 7), and thus a primorial, [2] where it is the least common multiple of these four prime numbers. 210 is the first primorial number greater than 2 which is not adjacent to 2 primes (211 is prime, but 209 is not).