42789987 is an odd 8-digits composite number following 42789986
and preceding 42789988 . In scientific notation, it is written as 4.2789987 × 10^7.
The sum of its digits is 54. It has a total of 2 prime factors and 4 positive divisors.
There are 28526652 positive integers (up to 42789987) that are relatively prime to 42789987.
42789987 has 4 divisors, whose sum is 47544440
The reverse of 42789987 is 78998724
Previous prime number is 9
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 54
Digital Root 9
Name
forty-two million seven hundred eighty-nine thousand nine hundred eighty-seven
Scientific notation
4.2789987 × 10^7
Engineering notation
4.2789987 × 10^6
Prime Factorization
9 × 4754443
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
42789987
Product of the distinct prime numbers
The prime factorization of 42789987 is 9 × 4754443.
Since it has a total of 2 prime factors.
7 , 4 , 90 , 70 , 191 , 34 , 6377 , 1724 , 58053 , 36585 , 61315 , 374930 , 9299827 , 2594108 , 89700828 , 73983172 , 24868049 , 472877280 , 3401454439 , 5772868180
n×2
85579974
n×3
128369961
n×4
171159948
n×5
213949935
n÷2
21394993.5
n÷3
14263329
n÷3
10697496.75
n÷5
8557997.4
n2
1830982987460169
n3
7.8347738230642E+22
n4
3.3524987003686E+30
n5
1.4345337580629E+38
2 √n
6541.4055829004
3 √n
349.76851904708
4 √n
80.878956366291
5 √n
33.594519277286
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
-42789986
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 42789987 can be divided by 4 positive divisors.
The sum of these divisors (counting 42789987) is 1, the average is 0.25.
Base
System
Value
2
Binary
10100011001110110001100011
3
Ternary
2222111221211100
4
Quaternary
2203032301203
5
Quinary
41423234422
6
Senary
4125045443
8
Octal
243166143
10
Decimal
42789987
12
Duodecimal
123b6883
16
Hexadecimal
28cec63
20
Vigesimal
d78ej7
36
Base36
ph4yr
md5
4e135de7ff65df591ad958496c2e3636
sha1
db99e7b5153718e8d1e38f02c87e1246641a121b
sha256
7afb75012d35a907b7e3b2c7382dcde35cb13663a2345174084e30415775cfa6
sha512
7c6fc509503117e7db05f9192bf17eb32bda53d1b98e6bdd74ede9e4730d8110f5a82f6de85930b2fe009c1cb5f14044fb15409d776d00e04c03dbc1057ae4bc
ripemd-160
29720f233417d6369d712ff4a00c5a21648a137b
Diameter
85579974
Circumference
268857417.61281
Area
5.7522027022528E+15
Volume
3.2818223846768E+23
Surface area
2.3008810809011E+16
Circumference
268857417.61281
Perimeter
171159948
Area
1830982987460169
Diagonal
60514179.949168
Surface area
10985897924761014
Volume
7.8347738230642E+22
Space diagonal
74114431.539212
Perimeter
128369961
Area
7.9283889051882E+14
Altitude
37057215.769606
Surface area
7.9283889051882E+14
Volume
9.2333694989192E+21
Height
20171393.316389