1281242 is an even 7-digits composite number following 1281241
and preceding 1281243 . In scientific notation, it is written as 1.281242 × 10^6.
The sum of its digits is 20. It has a total of 2 prime factors and 4 positive divisors.
There are 640620 positive integers (up to 1281242) that are relatively prime to 1281242.
1281242 has 4 divisors, whose sum is 1921866
The reverse of 1281242 is 2421821
Previous prime number is 2
Is Prime? no
Number parity even
Number length 7
Sum of Digits 20
Digital Root 2
Name
one million two hundred eighty-one thousand two hundred forty-two
Scientific notation
1.281242 × 10^6
Engineering notation
1.281242 × 10^6
Prime Factorization
2 × 640621
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
1281242
Product of the distinct prime numbers
The prime factorization of 1281242 is 2 × 640621.
Since it has a total of 2 prime factors.
2 , 3 , 77 , 51 , 682 , 561 , 8417 , 2281 , 80702 , 43434 , 17725 , 30133 , 1001063 , 9245322 , 75744220 , 68531759 , 529345245 , 341263254 , 5484661983 , 7666890953
n×2
2562484
n×3
3843726
n×4
5124968
n×5
6406210
n÷2
640621
n÷3
427080.66666667
n÷3
320310.5
n÷5
256248.4
n2
1641581062564
n3
2103262603761624488
n4
2.6947883849688E+24
n5
3.4526760599341E+30
2 √n
1131.9196084528
3 √n
108.61181108942
4 √n
33.644012965947
5 √n
16.654294241737
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
-1281241
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 1281242 can be divided by 4 positive divisors.
The sum of these divisors (counting 1281242) is 1, the average is 0.25.
Base
System
Value
2
Binary
100111000110011011010
3
Ternary
2102002112102
4
Quaternary
10320303122
5
Quinary
311444432
6
Senary
43243402
8
Octal
4706332
10
Decimal
1281242
12
Duodecimal
519562
16
Hexadecimal
138cda
20
Vigesimal
80322
36
Base36
rgm2
md5
b05c0e4f81dd3ed33ca3e967038b1b44
sha1
08b227da334554fc6e5afa6e999420d1855e8c46
sha256
c4282feac0eb0879f194828532d3d63f231784a40ab5ca86e31cf473dd92df3c
sha512
e5b84f25bc0c6366f8850061b7aee1b21e9f45926ac251020e3c4eb8ab332f2512aea27d086a5507cccf36fe669813beb58aed58e0f3c33867ae9561d0963ecd
ripemd-160
c74967ce8295960155e3eff0292d1ce48caa5136
Diameter
2562484
Circumference
8050280.9093414
Area
5157179006423.2
Volume
8.8101257927302E+18
Surface area
20628716025693
Circumference
8050280.9093414
Perimeter
5124968
Area
1641581062564
Diagonal
1811949.813082
Surface area
9849486375384
Volume
2103262603761624488
Space diagonal
2219176.2407912
Perimeter
3843726
Area
710825451275.94
Altitude
1109588.1203956
Surface area
710825451275.94
Volume
2.4787187495599E+17
Height
603983.27102734