212921 is an odd 6-digits composite number following 212920
and preceding 212922 . In scientific notation, it is written as 2.12921 × 10^5.
The sum of its digits is 17. It has a total of 2 prime factors and 4 positive divisors.
There are 211344 positive integers (up to 212921) that are relatively prime to 212921.
212921 has 4 divisors, whose sum is 214500
The reverse of 212921 is 129212
Previous prime number is 149
Is Prime? no
Number parity odd
Number length 6
Sum of Digits 17
Digital Root 8
Name
two hundred twelve thousand nine hundred twenty-one
Scientific notation
2.12921 × 10^5
Engineering notation
2.12921 × 10^3
Prime Factorization
149 × 1429
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
212921
Product of the distinct prime numbers
The prime factorization of 212921 is 149 × 1429.
Since it has a total of 2 prime factors.
5 , 3 , 16 , 9 , 635 , 90 , 6240 , 7942 , 43487 , 6888 , 694513 , 97779 , 4528714 , 2179832 , 63023192 , 51938600 , 28931170 , 180248896 , 170652917 , 2599720981
n×2
425842
n×3
638763
n×4
851684
n×5
1064605
n÷2
106460.5
n÷3
70973.666666667
n÷3
53230.25
n÷5
42584.2
n2
45335352241
n3
9652848534505961
n4
2.0552941628155E+21
n5
4.3761528844085E+26
2 √n
461.4336355317
3 √n
59.713541946975
4 √n
21.481006390104
5 √n
11.631713576971
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
-212920
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 212921 can be divided by 4 positive divisors.
The sum of these divisors (counting 212921) is 1, the average is 0.25.
Base
System
Value
2
Binary
110011111110111001
3
Ternary
101211001222
4
Quaternary
303332321
5
Quinary
23303141
6
Senary
4321425
8
Octal
637671
10
Decimal
212921
12
Duodecimal
a3275
16
Hexadecimal
33fb9
20
Vigesimal
16c61
36
Base36
4kah
md5
16fa85a495d977acedc944e02907e92c
sha1
159117c91108cc66b267db4b7d83fded652b3081
sha256
77fc59e96a8781ba1d9be24f5b7552f36a5a1f0c886a60379a53602342ac3e63
sha512
88dab2fb2e4b69ccd33e09534d31b007d2aed7c3c3e2a673f065a3549ae44470812d153630521b6aaf1c2d4edb4ef6cbc48f7a28052413f4227c167292bf7889
ripemd-160
48337b7d4edabefd29b25a2925359216ccda971f
Diameter
425842
Circumference
1337822.09879
Area
142425209548.23
Volume
4.0433757389625E+16
Surface area
569700838192.92
Circumference
1337822.09879
Perimeter
851684
Area
45335352241
Diagonal
301115.76591404
Surface area
272012113446
Volume
9652848534505961
Space diagonal
368789.98999837
Perimeter
638763
Area
19630783365.111
Altitude
184394.99499919
Surface area
19630783365.111
Volume
1.1375991094193E+15
Height
100371.92197135