The Number
42139
Forty-Two Thousand One Hundred and Thirty-Nine
In Base 21 Unovigesimal Is
4bbd21
The numbers with a 21 subscript use Base 21 Unovigesimal notation.
For more familiar numbers: See Forty-Two Thousand One Hundred and Thirty-Nine 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.
4.2139e4
Reciprocal
A number multiplied with its reciprocal is one.
0.0004cj6cf6920jji21
The reciprocal of 42139 in Base 21 Unovigesimal.
Palindrome?
A numerical palindrome has the same value when all of its digits are reversed.
The number 4bbd21 is not a palindrome.
A Prime Number
A prime number is a positive integer that is divisible only by itself and one.
Forty-two thousand one hundred and thirty-nine is the 4405th prime number. See primes in Base 21 Unovigesimal
Not A Composite
Composites have more than just these two factors.
Forty-Two Thousand One Hundred and Thirty-Nine is not a composite number because it has exactly two factors: One and Forty-Two Thousand One Hundred and Thirty-Nine
Prime Factors
The number forty-two thousand one hundred and thirty-nine has the following 1 prime factor:
Prime Factorization
The prime factorization of a positive integer is the unique list of prime factors together with their multiplicities
4bbd211
= 4bbd21
Base Conversions
The number forty-two thousand one hundred and thirty-nine in 35 different bases