42

Previous number

41

Next number

43

Sum of digits

6

Divisors of 42

Number of divisors

8

Sum of divisors

96

Factorization

42 = 2 × 3 × 7

Prime factors of 42

Factor Count
2 1
3 1
7 1

Square of 42

1764

Cube of 42

74088

Square root of 42

6.48074069840786037843827216420323...

Cube root of 42

3.47602664488644963469710091885645...

42th triangle number

903

Reciprocal of 42

0.0238095238095238

Binary of 42

101010

Number of digits of 42 in base 2

6

Octal of 42

52

Hexadecimal of 42

2a

Prime number No
Hexagonal number No
Perfect number No
Deficient number No
Abundant number No
Mersenne number No
Harshad number Yes
Harmonic divisor number No

Quadratic residues of 42

QR42 (sequence)

42th composite number

60

Euler's totient function of 42

12

Carmichael function of 42

6

Möbius function of 42

-1

Properties of 42

Properties of the number 42: 42 has 8 divisors. The divisors of 42 are 1, 2, 3, 6, 7, 14, 21, 42 and the sum of them is 96. The factorization of 42 is 2 × 3 × 7. The square and cube of 42 are 1764 and 74088 respectively. The square root and cube root of 42 are 6.48074069840786037843827216420323... and 3.47602664488644963469710091885645.... The binary, octal, hexadecimal of 42 are 101010, 52, 2a. 42 is not a prime number, not hexagonal number, not perfect number, not deficient number, not Mersenne number, not Mersenne number, Harshad number, not harmonic divisor number.

sin 42

-0.91652154791563378299912301372387...

cos 42

-0.39998531498835127040436532297463...

tan 42

2.29138799243748625400485252612270...

sin 42°

0.66913060635885823757007528911345...

cos 42°

0.74314482547739424411759046051884...

tan 42°

0.90040404429783993389690976982820...

log 42

3.73766961828336841122677469684277...

log10 42

1.62324929039790055718128769512987...

log2 42

5.39231742277876069380226908833720...

Related pairs