261421 is an odd 6-digits composite number following 261420
and preceding 261422 . In scientific notation, it is written as 2.61421 × 10^5.
The sum of its digits is 16. It has a total of 2 prime factors and 4 positive divisors.
There are 247644 positive integers (up to 261421) that are relatively prime to 261421.
261421 has 4 divisors, whose sum is 275200
The reverse of 261421 is 124162
Previous prime number is 19
Is Prime? no
Number parity odd
Number length 6
Sum of Digits 16
Digital Root 7
Name
two hundred sixty-one thousand four hundred twenty-one
Scientific notation
2.61421 × 10^5
Engineering notation
2.61421 × 10^3
Prime Factorization
19 × 13759
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
261421
Product of the distinct prime numbers
The prime factorization of 261421 is 19 × 13759.
Since it has a total of 2 prime factors.
7 , 10 , 90 , 22 , 710 , 646 , 5189 , 1867 , 89067 , 96513 , 850751 , 800325 , 7898215 , 2440801 , 67572836 , 81709029 , 11611506 , 961858129 , 8768215688 , 2225747724
n×2
522842
n×3
784263
n×4
1045684
n×5
1307105
n÷2
130710.5
n÷3
87140.333333333
n÷3
65355.25
n÷5
52284.2
n2
68340939241
n3
17865756677321461
n4
4.6704839763421E+21
n5
1.2209625915793E+27
2 √n
511.29345781068
3 √n
63.941107934194
4 √n
22.6117990839
5 √n
12.119036523479
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
-261420
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 261421 can be divided by 4 positive divisors.
The sum of these divisors (counting 261421) is 1, the average is 0.25.
Base
System
Value
2
Binary
111111110100101101
3
Ternary
111021121021
4
Quaternary
333310231
5
Quinary
31331141
6
Senary
5334141
8
Octal
776455
10
Decimal
261421
12
Duodecimal
107351
16
Hexadecimal
3fd2d
20
Vigesimal
1cdb1
36
Base36
5lpp
md5
e16f4e5ecab42f52ecd03fc2fdc11cef
sha1
c4d37abde54b1243023af576633ed50d9a098696
sha256
c409ec683ea3f73ea65f97c37c0b911eb469ca63b5644ab6d8f78c1127581e2c
sha512
dcc29284feca5e477b10c33bb814e18c21379ee2eef12f36cf339311ca120dfa79f5d946186655b312ef9b190d3f87d5ad12835620506074361b0be2dd595a8a
ripemd-160
adc311f1c2fd93b6d73e47785532e6379ca2bdce
Diameter
522842
Circumference
1642556.5861882
Area
214699392658.95
Volume
7.4835906571061E+16
Surface area
858797570635.81
Circumference
1642556.5861882
Perimeter
1045684
Area
68340939241
Diagonal
369705.12368914
Surface area
410045635446
Volume
17865756677321461
Space diagonal
452794.45416546
Perimeter
784263
Area
29592494750.597
Altitude
226397.22708273
Surface area
29592494750.597
Volume
2.1054996162605E+15
Height
123235.04122971