Is 142420349 a prime number?
It is possible to find out using mathematical methods whether a given integer is a prime number or not.
Yes, 142 420 349 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 142 420 349, the only two divisors are 1 and 142 420 349. Therefore 142 420 349 is a prime number.
As a consequence, 142 420 349 is only a multiple of 1 and 142 420 349.
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Since 142420349 is a prime number, 142420349 is also a deficient number, that is to say 142420349 is a natural integer that is strictly larger than the sum of its proper divisors, i.e., the divisors of 142420349 without 142420349 itself (that is 1, by definition!).