121818 is an even 6-digits composite number following 121817
and preceding 121819 . In scientific notation, it is written as 1.21818 × 10^5.
The sum of its digits is 21. It has a total of 4 prime factors and 16 positive divisors.
There are 39936 positive integers (up to 121818) that are relatively prime to 121818.
121818 has 16 divisors, whose sum is 247680
The reverse of 121818 is 818121
Previous prime number is 257
Is Prime? no
Number parity even
Number length 6
Sum of Digits 21
Digital Root 3
Name
one hundred twenty-one thousand eight hundred eighteen
Scientific notation
1.21818 × 10^5
Engineering notation
1.21818 × 10^3
Prime Factorization
2 × 3 × 257 × 79
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
121818
Product of the distinct prime numbers
The prime factorization of 121818 is 2 × 3 × 257 × 79.
Since it has a total of 4 prime factors.
2 , 8 , 17 , 53 , 478 , 262 , 2936 , 2965 , 37108 , 36362 , 651416 , 398265 , 4946516 , 6132799 , 46564172 , 53747689 , 468713346 , 931587998 , 3447290751 , 3678446848
n×2
243636
n×3
365454
n×4
487272
n×5
609090
n÷2
60909
n÷3
40606
n÷3
30454.5
n÷5
24363.6
n2
14839625124
n3
1807733453355432
n4
2.2021447382085E+20
n5
2.6826086771909E+25
2 √n
349.02435445109
3 √n
49.572081496144
4 √n
18.682193512837
5 √n
10.402609429082
1 , 2 , 3 , 6 , 79 , 158 , 237 , 257 , 474 , 514 , 771 , 1542 , 20303 , 40606 , 60909 , 121818
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
-121817
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 121818 can be divided by 16 positive divisors.
The sum of these divisors (counting 121818) is 1, the average is 0.0625.
Base
System
Value
2
Binary
11101101111011010
3
Ternary
20012002210
4
Quaternary
131233122
5
Quinary
12344233
6
Senary
2335550
8
Octal
355732
10
Decimal
121818
12
Duodecimal
5a5b6
16
Hexadecimal
1dbda
20
Vigesimal
f4ai
36
Base36
2lzu
md5
39f22768286d3e3202467c988d3be66a
sha1
bf30ebc81713123135c8da2bdde3e2d45fc846f2
sha256
51bd230202ec402251cc0c93e08090ba30bdff61ff7fa46251882dab3e10bacb
sha512
019eaa6b9ff67c24af10265066aa8d0ace41028289c65243f3c6bd0c75c286e45f26f7dd30b54366d6e833fcc79fbc482a9cb586e91853bdf55e30feae273fb8
ripemd-160
e4a1528472c232ae38cca6030a257e6e363744d2
Diameter
243636
Circumference
765405.06775
Area
46620057271.585
Volume
7.5722161822799E+15
Surface area
186480229086.34
Circumference
765405.06775
Perimeter
487272
Area
14839625124
Diagonal
172276.66774117
Surface area
89037750744
Volume
1807733453355432
Space diagonal
210994.96527643
Perimeter
365454
Area
6425746170.0109
Altitude
105497.48263821
Surface area
6425746170.0109
Volume
2.1304343057423E+14
Height
57425.555913722