The Number
42
Forty-Two
In Base 21 Unovigesimal Is
2021
The numbers with a 21 subscript use Base 21 Unovigesimal notation.
For more familiar numbers: See Forty-Two in Base 10 Decimal
Nearby Numbers
Positive, nonzero integers within three units
Scientific Notation
Scientific notation expresses a quantity as the product of its significand with 10 raised to an integer exponent.
4.2e1
Reciprocal
A number multiplied with its reciprocal is one.
0.0aaaaaaaaaaaaa21
The reciprocal of 42 in Base 21 Unovigesimal.
Palindrome?
A numerical palindrome has the same value when all of its digits are reversed.
The number 2021 is not a palindrome.
Not A Prime Number
A prime number is a positive integer that is divisible only by itself and one.
Forty-two is a composite number with 8 total factors (including 1 and itself). See primes in Base 21 Unovigesimal
A Composite
Composites have more than just these two factors.
Forty-two is a composite number with 8 total factors (including 1 and itself).
Prime Factors
The number forty-two has the following 3 prime factors:
Prime Factorization
The prime factorization of a positive integer is the unique list of prime factors together with their multiplicities
2211
·
3211
·
7211
= 2021
Base Conversions
The number forty-two in 35 different bases