The Natural Number 145

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Properties of the Number 145

  • Because 145 is not divisible by 2 ...
    • 145 is an odd number
    • 145 has parity 1
    • 145 is not an even number
  • Because 145 can be factored as 5 x 29 ...
    • 145 is a composite number
    • 145 is not a prime number

Alternative Representations of the Number 145

  • Base 2 (binary): 10010001
  • Base 8 (octal): 221
  • Base 16 (hexadecimal): 91
  • Roman numeral: CXLV
  • Words: one hundred forty-five

Divisors of the Number 145

  • 145 has 4 positive divisors: 1, 5, 29, 145
    • The sum of the positive divisors is 180
  • 145 has 3 proper divisors: 1, 5, 29
    • The sum of the proper divisors is 35
  • 145 is a deficient number since the sum of the proper divisors is less than 145
  • 145 is not a perfect number
  • 145 is not an abundant number

More Properties of the Number 145

  • 145 is not a square number
  • 145 is not a cube number
  • 145 is not a palindromic number
  • 145 is not a Fibonacci number
  • 145 is not a Lucas number

1:04 pm, Wednesday, April 16, 2014 (UTC; +0000)
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