Is 43421069 a prime number?
It is possible to find out using mathematical methods whether a given integer is a prime number or not.
Yes, 43 421 069 is a prime number.
Indeed, the definition of a prime numbers is to have exactly two distinct positive divisors, 1 and itself. A number is a divisor of another number when the remainder of Euclid’s division of the second one by the first one is zero. Concerning the number 43 421 069, the only two divisors are 1 and 43 421 069. Therefore 43 421 069 is a prime number.
As a consequence, 43 421 069 is only a multiple of 1 and 43 421 069.
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Since 43421069 is a prime number, 43421069 is also a deficient number, that is to say 43421069 is a natural integer that is strictly larger than the sum of its proper divisors, i.e., the divisors of 43421069 without 43421069 itself (that is 1, by definition!).