121669905 is an odd 9-digits composite number following 121669904
and preceding 121669906 . In scientific notation, it is written as 1.21669905 × 10^8.
The sum of its digits is 39. It has a total of 4 prime factors and 16 positive divisors.
There are 55620480 positive integers (up to 121669905) that are relatively prime to 121669905.
121669905 has 16 divisors, whose sum is 222482304
The reverse of 121669905 is 509966121
Previous prime number is 5
Is Prime? no
Number parity odd
Number length 9
Sum of Digits 39
Digital Root 3
Name
one hundred twenty-one million six hundred sixty-nine thousand nine hundred five
Scientific notation
1.21669905 × 10^8
Engineering notation
1.21669905 × 10^6
Prime Factorization
3 × 7 × 5 × 1158761
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
121669905
Product of the distinct prime numbers
The prime factorization of 121669905 is 3 × 7 × 5 × 1158761.
Since it has a total of 4 prime factors.
6 , 10 , 51 , 45 , 694 , 189 , 974 , 262 , 79806 , 52117 , 882118 , 147550 , 4185211 , 3035456 , 82069362 , 12478026 , 681634788 , 112412719 , 8187965266 , 454103315
n×2
243339810
n×3
365009715
n×4
486679620
n×5
608349525
n÷2
60834952.5
n÷3
40556635
n÷3
30417476.25
n÷5
24333981
n2
14803565782709025
n3
1.8011484424435E+24
n4
2.1914555988299E+32
n5
2.6663419452136E+40
2 √n
11030.408197342
3 √n
495.51984973988
4 √n
105.0257501632
5 √n
41.403459816759
1 , 3 , 5 , 7 , 15 , 21 , 35 , 105 , 1158761 , 3476283 , 5793805 , 8111327 , 17381415 , 24333981 , 40556635 , 121669905
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
-121669904
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 121669905 can be divided by 16 positive divisors.
The sum of these divisors (counting 121669905) is 1, the average is 0.0625.
Base
System
Value
2
Binary
111010000001000100100010001
3
Ternary
22110221110201210
4
Quaternary
13100020210101
5
Quinary
222121414110
6
Senary
20023450333
8
Octal
720104421
10
Decimal
121669905
12
Duodecimal
348b69a9
16
Hexadecimal
7408911
20
Vigesimal
1i08ef5
36
Base36
20ft3l
md5
e1c72151509d5342cf61900ef8da286d
sha1
2714c1c9aa8ecd9219a3fed61185c5d4b03b1cbb
sha256
b8ed85983d6137a2a9081bcafc0a47bba8e77462656371c77716462527f57ddf
sha512
0162456e8477eace845528d777c3ac6309499be8dcc8be6b8a6442bffd7f9fdee2af484b39f647d0128c27de3bf4a0f89a0c5820064d20946721dbbdb4635bf2
ripemd-160
c9a88580d64fd29c5ef94bab8fdc4dc62f8e3370
Diameter
243339810
Circumference
764474559.42194
Area
4.6506773509892E+16
Volume
7.5446329530734E+24
Surface area
1.8602709403957E+17
Circumference
764474559.42194
Perimeter
486679620
Area
14803565782709025
Diagonal
172067229.78365
Surface area
88821394696254150
Volume
1.8011484424435E+24
Space diagonal
210738457.21208
Perimeter
365009715
Area
6.41013201721E+15
Altitude
105369228.60604
Surface area
6.41013201721E+15
Volume
2.1226737959589E+23
Height
57355743.261215