42021 is an odd 5-digits composite number following 42020
and preceding 42022 . In scientific notation, it is written as 4.2021 × 10^4.
The sum of its digits is 9. It has a total of 4 prime factors and 16 positive divisors.
There are 22176 positive integers (up to 42021) that are relatively prime to 42021.
42021 has 16 divisors, whose sum is 63360
The reverse of 42021 is 12024
Previous prime number is 23
Is Prime? no
Number parity odd
Number length 5
Sum of Digits 9
Digital Root 9
Name
forty-two thousand twenty-one
Scientific notation
4.2021 × 10^4
Engineering notation
4.2021 × 10^3
Prime Factorization
21 × 3 × 23 × 29
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
42021
Product of the distinct prime numbers
The prime factorization of 42021 is 21 × 3 × 23 × 29.
Since it has a total of 4 prime factors.
9 , 2 , 21 , 85 , 514 , 790 , 1729 , 6746 , 7476 , 52786 , 812082 , 269387 , 6862298 , 4958140 , 22715012 , 15940818 , 70780113 , 676697110 , 3951233429 , 5035650870
n×2
84042
n×3
126063
n×4
168084
n×5
210105
n÷2
21010.5
n÷3
14007
n÷3
10505.25
n÷5
8404.2
n2
1765764441
n3
74199187575261
n4
3117924061100042481
n5
1.3101828697148E+23
2 √n
204.99024367028
3 √n
34.766058861311
4 √n
14.31748035341
5 √n
8.4080111060234
1 , 3 , 21 , 23 , 29 , 63 , 69 , 87 , 483 , 609 , 667 , 1449 , 1827 , 2001 , 14007 , 42021
16 divisors
τ
Total Divisors
16
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-42020
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.0625
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
1
Returns the nth root of the product of n divisors
H
Harmonic Mean
16
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 42021 can be divided by 16 positive divisors.
The sum of these divisors (counting 42021) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1010010000100101
3
Ternary
2010122100
4
Quaternary
22100211
5
Quinary
2321041
6
Senary
522313
8
Octal
122045
10
Decimal
42021
12
Duodecimal
20399
16
Hexadecimal
a425
20
Vigesimal
5511
36
Base36
wf9
md5
e2d6345be0924a744fdca3fb01c3b313
sha1
ea11c4a24f841556ff3f4818c7b62fcdd50c00b3
sha256
71b39408f072c8dfa6888e0834691bc5a21ed1c7a64e0e12f93cb13a8e1f5501
sha512
7992702046bc85dd12180795453c2cc998e7b9ead8e45fd49fb27808d961ae20729182883e171897d80f7a41a172953b35292dd4251bd81f3eceebebd512f419
ripemd-160
321fee14da5948b9f9c8c2f4dc8a0608a8ad5cdc
Diameter
84042
Circumference
264025.72979299
Area
5547312595.8157
Volume
3.1080483011836E+14
Surface area
22189250383.263
Circumference
264025.72979299
Perimeter
168084
Area
1765764441
Diagonal
59426.66810448
Surface area
10594586646
Volume
74199187575261
Space diagonal
72782.506984852
Perimeter
126063
Area
764598431.50261
Altitude
36391.253492426
Surface area
764598431.50261
Volume
8744458115499.9
Height
19808.88936816