642128247 is an odd 9-digits composite number following 642128246
and preceding 642128248 . In scientific notation, it is written as 6.42128247 × 10^8.
The sum of its digits is 36. It has a total of 2 prime factors and 4 positive divisors.
There are 428085492 positive integers (up to 642128247) that are relatively prime to 642128247.
642128247 has 4 divisors, whose sum is 713475840
The reverse of 642128247 is 742821246
Previous prime number is 9
Is Prime? no Number parity odd Number length 9 Sum of Digits 36 Digital Root 9
Name
six hundred forty-two million one hundred twenty-eight thousand two hundred forty-seven
Scientific notation
6.42128247 × 10^8
Engineering notation
6.42128247 × 10^6
Prime Factorization
9 × 71347583
Composite number
ω Distinct Factors
2 Total number of distinct prime factors
Ω Total Factors
2 Total number of prime factors
rad Radical
642128247 Product of the distinct prime numbers
The prime factorization of 642128247 is 9 × 71347583.
Since it has a total of 2 prime factors.
8 , 1 , 77 , 59 , 332 , 547 , 4287 , 9035 , 42886 , 24273 , 352787 , 352382 , 3151226 , 1116880 , 43607400 , 42815371 , 886355454 , 854604014 , 2068527182 , 7843476058
n×2
1284256494
n×3
1926384741
n×4
2568512988
n×5
3210641235
n÷2
321064123.5
n÷3
214042749
n÷3
160532061.75
n÷5
128425649.4
n2
412328685595293009
n3
2.6476789606912E+26
n4
1.7001494496474E+35
n5
1.0917139857401E+44
2 √n25340.249544943
3 √n862.7280626896
4 √n159.18621028514
5 √n57.746325558059
4 divisors
τ Total Divisors
4 Total number of the positive divisors of n
σ Sum of Divisors
1 Sum of all the positive divisors of n
s Aliquot Sum
-642128246 Sum of the proper positive divisors of n
A Arithmetic Mean
0.25 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
4 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 642128247 can be divided by 4 positive divisors.
The sum of these divisors (counting 642128247) is 1, the average is 0.25.
Base
System
Value
2
Binary
100110010001100001100101110111
3
Ternary
1122202021111100200
4
Quaternary
212101201211313
5
Quinary
2303341100442
6
Senary
143415011543
8
Octal
4621414567
10
Decimal
642128247
12
Duodecimal
15b069bb3
16
Hexadecimal
26461977
20
Vigesimal
a0d60c7
36
Base36
amb1br
md5
69512c58294a8e65c24093584e2e4080
sha1
a3271c1e97f7f7747e3c70de597e1f7911638a6a
sha256
6018155ce2819ff02d59baf12b698a1fe025e179339f38c0a0114e511f81d2e1
sha512
78d32592670f0c3d0411cc61485b74b214b39fdf590cb6f4c811f862a81e24a63d08f595e3e9e410723fc76a4932b079c787d5df655db076a8029ee8b5c31736
ripemd-160
649d50b48d9dfd9e2879370dd2c5e4023145de1d
Diameter
1284256494
Circumference
4034610766.8754
Area
1.2953687695305E+18
Volume
1.1090571695962E+27
Surface area
5.181475078122E+18
Circumference
4034610766.8754
Perimeter
2568512988
Area
412328685595293009
Diagonal
908106475.69026
Surface area
2473972113571758054
Volume
2.6476789606912E+26
Space diagonal
1112198748.7791
Perimeter
1926384741
Area
1.7854355821729E+17
Altitude
556099374.38957
Surface area
1.7854355821729E+17
Volume
3.1203195791828E+25
Height
302702158.56342