The Number

128009

One Hundred and Twenty-Eight Thousand and Nine

In Base 21 Unovigesimal Is

dh5e21

The numbers with a 21 subscript use Base 21 Unovigesimal notation.

For more familiar numbers: See One Hundred and Twenty-Eight Thousand and Nine in Base 10 Decimal

Nearby Numbers

Positive, nonzero integers within three units

128006
dh5b21
One Hundred and Twenty-Eight Thousand and Six in Base 21 Unovigesimal
128007
dh5c21
One Hundred and Twenty-Eight Thousand and Seven in Base 21 Unovigesimal
128008
dh5d21
One Hundred and Twenty-Eight Thousand and Eight in Base 21 Unovigesimal
128010
dh5f21
One Hundred and Twenty-Eight Thousand and Ten in Base 21 Unovigesimal
128011
dh5g21
One Hundred and Twenty-Eight Thousand and Eleven in Base 21 Unovigesimal
128012
dh5h21
One Hundred and Twenty-Eight Thousand and Twelve in Base 21 Unovigesimal

Scientific Notation

Scientific notation expresses a quantity as the product of its significand with 10 raised to an integer exponent.

1.28009e5

Reciprocal

A number multiplied with its reciprocal is one.

0.0001aj006c5717b121

The reciprocal of 128009 in Base 21 Unovigesimal.

Palindrome?

A numerical palindrome has the same value when all of its digits are reversed.

The number dh5e21 is not a palindrome.

Not A Prime Number

A prime number is a positive integer that is divisible only by itself and one.

One hundred and twenty-eight thousand and nine is a composite number with 4 total factors (including 1 and itself).   See primes in Base 21 Unovigesimal

A Composite

Composites have more than just these two factors.

One hundred and twenty-eight thousand and nine is a composite number with 4 total factors (including 1 and itself).

Prime Factors

The prime factors of a positive integer are the integers that divide it exactly and are also prime.

The number one hundred and twenty-eight thousand and nine has the following 2 prime factors:

7
721
Seven in Base 21 Unovigesimal
18287
1k9h21
Eightteen Thousand Two Hundred and Eighty-Seven in Base 21 Unovigesimal

Prime Factorization

The prime factorization of a positive integer is the unique list of prime factors together with their multiplicities

7211 · 1k9h211 = dh5e21

Base Conversions

The number one hundred and twenty-eight thousand and nine in 35 different bases