The Number
42157
Forty-Two Thousand One Hundred and Fifty-Seven
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.
4.2157e4
Reciprocal
A number multiplied with its reciprocal is one.
0.00002372085300187395
The reciprocal of 42157.
Palindrome?
A numerical palindrome has the same value when all of its digits are reversed.
The number 42157 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 fifty-seven is the 4406th prime number. See primes in Base 10 Decimal
Not A Composite
Composites have more than just these two factors.
Forty-Two Thousand One Hundred and Fifty-Seven is not a composite number because it has exactly two factors: One and Forty-Two Thousand One Hundred and Fifty-Seven
Prime Factors
The number forty-two thousand one hundred and fifty-seven 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
421571
= 42157
Base Conversions
The number forty-two thousand one hundred and fifty-seven in 35 different bases