642005 is an odd 6-digits composite number following 642004
and preceding 642006 . In scientific notation, it is written as 6.42005 × 10^5.
The sum of its digits is 17. It has a total of 3 prime factors and 8 positive divisors.
There are 377856 positive integers (up to 642005) that are relatively prime to 642005.
642005 has 8 divisors, whose sum is 689472
The reverse of 642005 is 500246
Previous prime number is 83
Is Prime? no
Number parity odd
Number length 6
Sum of Digits 17
Digital Root 8
Name
six hundred forty-two thousand five
Scientific notation
6.42005 × 10^5
Engineering notation
6.42005 × 10^3
Prime Factorization
455 × 83 × 17
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
642005
Product of the distinct prime numbers
The prime factorization of 642005 is 455 × 83 × 17.
Since it has a total of 3 prime factors.
4 , 3 , 75 , 36 , 550 , 230 , 47 , 6212 , 84384 , 80719 , 445974 , 461816 , 1698004 , 6582817 , 10603781 , 97970702 , 137446643 , 216303396 , 4363550448 , 6133389269
n×2
1284010
n×3
1926015
n×4
2568020
n×5
3210025
n÷2
321002.5
n÷3
214001.66666667
n÷3
160501.25
n÷5
128401
n2
412170420025
n3
264615470508150125
n4
1.6988445514358E+23
n5
1.0906666962446E+29
2 √n
801.25214508293
3 √n
86.267286320284
4 √n
28.306397599888
5 √n
14.504664308685
8 divisors
τ
Total Divisors
8
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-642004
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.125
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
8
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 642005 can be divided by 8 positive divisors.
The sum of these divisors (counting 642005) is 1, the average is 0.125.
Base
System
Value
2
Binary
10011100101111010101
3
Ternary
1012121122222
4
Quaternary
2130233111
5
Quinary
131021010
6
Senary
21432125
8
Octal
2345725
10
Decimal
642005
12
Duodecimal
26b645
16
Hexadecimal
9cbd5
20
Vigesimal
40505
36
Base36
drdh
md5
17684c69e8ef4428dc99cbc90c03bf41
sha1
898e82acfe5943aa989769d2d190f8acd849fb3e
sha256
f73fec1ed7f623541f9e3b0f390acb3f3f881a3ab979342d71f05ba3f948aecb
sha512
adfdb84387d082b6aa1b85c009b3f2141454113dbb6ce5816222a80dab86e10d0cfe6e08ff94e046283aa4ed8c2df83f2b76f007232517c2878d76568ce7eeb8
ripemd-160
43f87f7d07dacb40b4537c7997c154196ede6908
Diameter
1284010
Circumference
4033836.3831358
Area
1294871563577.6
Volume
1.1084186908995E+18
Surface area
5179486254310.2
Circumference
4033836.3831358
Perimeter
2568020
Area
412170420025
Diagonal
907932.17811134
Surface area
2473022520150
Volume
264615470508150125
Space diagonal
1111985.2787133
Perimeter
1926015
Area
178475027215.08
Altitude
555992.63935663
Surface area
178475027215.08
Volume
3.1185232267197E+16
Height
302644.05937045