1242 is an even 4-digits composite number following 1241
and preceding 1243 . In scientific notation, it is written as 1.242 × 10^3.
The sum of its digits is 9. It has a total of 4 prime factors and 16 positive divisors.
There are 396 positive integers (up to 1242) that are relatively prime to 1242.
1242 has 16 divisors, whose sum is 2880
The reverse of 1242 is 2421
Previous prime number is 3
Is Prime? no
Number parity even
Number length 4
Sum of Digits 9
Digital Root 9
Name
one thousand two hundred forty-two
Scientific notation
1.242 × 10^3
Engineering notation
1.242 × 10^3
Prime Factorization
2 × 9 × 3 × 23
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
1242
Product of the distinct prime numbers
The prime factorization of 1242 is 2 × 9 × 3 × 23.
Since it has a total of 4 prime factors.
3 , 4 , 54 , 95 , 800 , 816 , 8405 , 2598 , 69310 , 76045 , 485571 , 595109 , 117767 , 672340 , 10175773 , 8615259 , 392861772 , 983967009 , 6403717338 , 1727480535
n×2
2484
n×3
3726
n×4
4968
n×5
6210
n÷2
621
n÷3
414
n÷3
310.5
n÷5
248.4
n2
1542564
n3
1915864488
n4
2379503694096
n5
2955343588067232
2 √n
35.242020373412
3 √n
10.749143613048
4 √n
5.9364989996977
5 √n
4.1574240033147
1 , 2 , 3 , 6 , 9 , 18 , 23 , 27 , 46 , 54 , 69 , 138 , 207 , 414 , 621 , 1242
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
-1241
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 1242 can be divided by 16 positive divisors.
The sum of these divisors (counting 1242) is 1, the average is 0.0625.
Base
System
Value
2
Binary
10011011010
3
Ternary
1201000
4
Quaternary
103122
5
Quinary
14432
6
Senary
5430
8
Octal
2332
10
Decimal
1242
12
Duodecimal
876
16
Hexadecimal
4da
20
Vigesimal
322
36
Base36
yi
md5
2de5d16682c3c35007e4e92982f1a2ba
sha1
beebbcfb1d05a761dcc753bd9ba606039b817ff4
sha256
550018524a55c47b54067a7454e1b6f65f0fd43a53e79d71b0e5cb364017cf45
sha512
57d638d5069465e9c8700db254dc63859904b838ac9761fc84d06e0b84615af51f23adef0529ccc3e33b36698dedf6fc0c846c08c9c78159659bd38b6b3c0dee
ripemd-160
a74e670255881a28fc18afc15213eeb4ff4ad341
Diameter
2484
Circumference
7803.716151517
Area
4846107.7300921
Volume
8025154401.0325
Surface area
19384430.920368
Circumference
7803.716151517
Perimeter
4968
Area
1542564
Diagonal
1756.4532444674
Surface area
9255384
Volume
1915864488
Space diagonal
2151.2071030005
Perimeter
3726
Area
667949.80548167
Altitude
1075.6035515003
Surface area
667949.80548167
Volume
225786795.21655
Height
585.48441482246