1205 is an odd composite number. It is composed of two distinct prime numbers multiplied together. It has a total of four divisors.
Prime factorization of 1205:
5 × 241
5 × 241
See below for interesting mathematical facts about the number 1205 from the Numbermatics database.
Names of 1205
- Cardinal: 1205 can be written as One thousand, two hundred five.
- Scientific notation: 1.205 × 103
Factors of 1205
- Number of distinct prime factors ω(n): 2
- Total number of prime factors Ω(n): 2
- Sum of prime factors: 246
Divisors of 1205
- Number of divisors d(n): 4
- Complete list of divisors:
- Sum of all divisors σ(n): 1452
- Sum of proper divisors (its aliquot sum) s(n): 247
- 1205 is a deficient number, because the sum of its proper divisors (247) is less than itself. Its deficiency is 958
Bases of 1205
- Binary: 100101101012
- Hexadecimal: 0x4B5
- Base-36: XH
Squares and roots of 1205
- 1205 squared (12052) is 1452025
- 1205 cubed (12053) is 1749690125
square rootof 1205 is 34.7131099155
cube rootof 1205 is 10.6413243871
Scales and comparisonsHow big is 1205?
- 1,205 seconds is equal to 20 minutes, 5 seconds.
To count from 1 to 1,205 would take you about twenty minutes.
This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)
- A cube with a volume of 1205 cubic inches would be around 0.9 feet tall.
Recreational maths with 1205
- 1205 backwards is 5021
- The number of decimal digits it has is: 4
- The sum of 1205's digits is 8
- More coming soon!
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Cite this page
"Number 1205 - Facts about the integer". Numbermatics.com. 2019. Web. 17 November 2019.
Numbermatics. (2019). Number 1205 - Facts about the integer. Retrieved 17 November 2019, from https://numbermatics.com/n/1205/
Numbermatics. 2019. "Number 1205 - Facts about the integer". https://numbermatics.com/n/1205/
The information we have on file for 1205 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!