Factors of 42

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What are the Factors of 42?

Answer

Factors of 42:

1, 2, 3, 6, 7, 14, 21, 42

8 factors · 42 = 2 × 3 × 7 · composite

Underlined — prime: 2, 3, 7 · 1 — neither prime nor composite · others — composite

Factor pairs of 42

4 pairs: 1 × 42 · 2 × 21 · 3 × 14 · 6 × 7

Past √42 ≈ 6.48 every pair would repeat one already found — so checking stops at 6.

42 = 2 × 3 × 7 → (1 + 1) × (1 + 1) × (1 + 1) = 8 factors: add 1 to each exponent and multiply.

Related Calculations

See Also

Prime Number Checker - Find out whether a given number is Prime or not
Prime Factorization - Prime Factorization Calculator
Prime Numbers List - List of all Prime Numbers - how many Prime numbers are between

Recalculate with different values ↑

Factors Table

Number	Factors
27	1, 3, 9, 27
28	1, 2, 4, 7, 14, 28
29	1, 29
30	1, 2, 3, 5, 6, 10, 15, 30
31	1, 31
32	1, 2, 4, 8, 16, 32
33	1, 3, 11, 33
34	1, 2, 17, 34
35	1, 5, 7, 35
36	1, 2, 3, 4, 6, 9, 12, 18, 36
37	1, 37
38	1, 2, 19, 38
39	1, 3, 13, 39
40	1, 2, 4, 5, 8, 10, 20, 40
41	1, 41
42	1, 2, 3, 6, 7, 14, 21, 42
43	1, 43
44	1, 2, 4, 11, 22, 44
45	1, 3, 5, 9, 15, 45
46	1, 2, 23, 46
47	1, 47
48	1, 2, 3, 4, 6, 8, 12, 16, 24, 48
49	1, 7, 49
50	1, 2, 5, 10, 25, 50
51	1, 3, 17, 51
52	1, 2, 4, 13, 26, 52
53	1, 53
54	1, 2, 3, 6, 9, 18, 27, 54
55	1, 5, 11, 55
56	1, 2, 4, 7, 8, 14, 28, 56

FAQ

What are the Factors of 42?

Factors of 42: 1, 2, 3, 6, 7, 14, 21, 42

How many factors does 42 have?

Number 42 has 8 factors

How many Factor Pairs does 42 have?

Number 42 has 4 factor pairs

Is 42 a prime or composite number?

Composite: 42 = 2 × 3 × 7, so it has 8 factors — a prime has exactly two.

How many factors does 42 have excluding 1 and 42?

6: 2, 3, 6, 7, 14 and 21.