Is 1422 is a composite number or not ?
- As we already know that, the number having factors 1 and the number itself is the prime number.
- And numbers having more than these two factors are the composite numbers.
- To check whether the number 1422 is composite or not first we have to find its factors.
Contents
Factors of 1422:
- If we have taken numbers from 1, 2, 3…for checking factors of 1422, we found that 1422 has factors 1, 2, 3, 6, 9, 18, 79, 158, 237, 474, 711 and 1422. Hence, we must say that 1422 is a composite number.
- Thus, 1422 is the composite number.
- If we multiply 1422 by 1, 2, 3 then we get the multiples of 1422 which are 1422, 2844 and so on.
About the number 1422:
- 1422 has more than two factors which are 1, 2, 3, 6, 9, 18, 79, 158, 237, 474, 711 and 1422 and hence it is the composite number.
- 1422 is the even composite number and it is not the perfect square also.
- If we divide 1422 by 1, 2, 3, 6, 9, 18, 79, 158, 237, 474, 711 and 1422 then we get remainder as zero. Hence, 1, 2, 3, 6, 9, 18, 79, 158, 237, 474, 711 and 1422 are the factors of 1422.
Note:
- 1422 is not the perfect square.
- Factors of 1422: 1, 2, 3, 6, 9, 18, 79, 158, 237, 474, 711 and 1422
- Prime factors of 1422: 2, 3, 79
Conclusion:
- 1422 is the composite number which has factors 1, 2, 3, 6, 9, 18, 79, 158, 237, 474, 711 and 1422
- And hence, 1422 is not the prime number.
Multiple Choice Questions:
1) 1422 is a
a) Even number
b) Not a perfect square number
c) Composite number
d) all
Ans: d) all
2) The composite factors of a composite number 1422 are
a) 6, 9, 18, 158, 237, 474, 711 and 1422
b) 2, 3, 79
c) 1, 6, 9, 18, 158, 237, 474, 711 and 1422
d) 1, 2, 3, 6, 9, 18, 79, 158, 237, 474, 711 and 1422
Ans: a) 6, 9, 18, 158, 237, 474, 711 and 1422
3) 1422 is composite number because
a) It has factors 1, 2, 3, 6, 9, 18, 79, 158, 237, 474, 711 and 1422
b) It has more than two factors
c) Divisible by 2
d) Both a and b
Ans: d) both a and b