Number
-1,021
- Negative
- Odd
- 4 digits
-1,021 is an odd 4-digit integer and the negative of 1,021. It has 2 divisors and a digital root of 4.
Number properties
ParityOddnot divisible by 2
SignNegative
Absolute value1,021
Digit count4
Digit sum4
Digital root4repeated digit sum
PalindromicNoreads differently backwards
Factors & divisors
Prime factorisation−1 × 1,021
Distinct prime factors11,021
Number of divisors2
Sum of divisors σ(n)1,022
SquarefreeYesno repeated prime factor
All divisors1, 1,0212 in total
Arithmetic
Representations
Decimal-1,021
Binary111111110110 bits
Octal1775
Hexadecimal3FD
Base 36SD
In wordsminus one thousand and twenty-one
Ordinalminus one thousand and twenty-first
Scientific notation-1.021 × 10^3
Engineering notation-1.021 × 10^3
Powers & multiples
-1,021 to the power 21,042,441
-1,021 to the power 3-1,064,332,261
-1,021 to the power 41,086,683,238,481
-1,021 to the power 5-1,109,503,586,489,101
First ten multiples-1,021, -2,042, -3,063, -4,084, -5,105, -6,126, -7,147, -8,168, -9,189, -10,210
Powers of twoBetween 2^9 (512) and 2^10 (1,024)
Divisibility tests
Divisible by 2No, remainder 1
Divisible by 3No, remainder 1
Divisible by 4No, remainder 1
Divisible by 5No, remainder 1
Divisible by 6No, remainder 1
Divisible by 7No, remainder 6
Divisible by 8No, remainder 5
Divisible by 9No, remainder 4
Divisible by 10No, remainder 1
Divisible by 11No, remainder 9
Divisible by 12No, remainder 1
Divisible by 100No, remainder 21
As a percentage & fraction
As a percentage-102,100%
-1,021% as a decimal-10.21
-1,021% of 100-1,021
-1,021% of 1,000-10,210
As a fraction of 100-1,021/100
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