The Number
81240
Eighty-One Thousand Two Hundred and Forty
In Base 7 Septenary Is
4555657
The numbers with a 7 subscript use Base 7 Septenary notation.
For more familiar numbers: See Eighty-One Thousand Two Hundred and Forty 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.
8.1240e4
Reciprocal
A number multiplied with its reciprocal is one.
0.0000013065021625065056667
The reciprocal of 81240 in Base 7 Septenary.
Palindrome?
A numerical palindrome has the same value when all of its digits are reversed.
The number 4555657 is not a palindrome.
Not A Prime Number
A prime number is a positive integer that is divisible only by itself and one.
Eighty-one thousand two hundred and forty is a composite number with 32 total factors (including 1 and itself). See primes in Base 7 Septenary
A Composite
Composites have more than just these two factors.
Eighty-one thousand two hundred and forty is a composite number with 32 total factors (including 1 and itself).
Prime Factors
The number eighty-one thousand two hundred and forty has the following 4 prime factors:
Prime Factorization
The prime factorization of a positive integer is the unique list of prime factors together with their multiplicities
273
·
371
·
571
·
165571
= 4555657
Base Conversions
The number eighty-one thousand two hundred and forty in 35 different bases