Base | Representation |
---|---|
bin | 1111010001101… |
… | …00111010011111 |
3 | 22221010100011022 |
4 | 13220310322133 |
5 | 230301034012 |
6 | 20414314355 |
7 | 3114124526 |
oct | 750647237 |
9 | 287110138 |
10 | 128143007 |
11 | 66373813 |
12 | 36ab89bb |
13 | 20718485 |
14 | 130394bd |
15 | b3b3472 |
hex | 7a34e9f |
128143007 has 2 divisors, whose sum is σ = 128143008. Its totient is φ = 128143006.
The previous prime is 128142983. The next prime is 128143033. The reversal of 128143007 is 700341821.
It is an a-pointer prime, because the next prime (128143033) can be obtained adding 128143007 to its sum of digits (26).
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 128143007 - 214 = 128126623 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (128143607) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64071503 + 64071504.
It is an arithmetic number, because the mean of its divisors is an integer number (64071504).
Almost surely, 2128143007 is an apocalyptic number.
128143007 is a deficient number, since it is larger than the sum of its proper divisors (1).
128143007 is an equidigital number, since it uses as much as digits as its factorization.
128143007 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 1344, while the sum is 26.
The square root of 128143007 is about 11320.0268109223. The cubic root of 128143007 is about 504.1560350314.
Adding to 128143007 its reverse (700341821), we get a palindrome (828484828).
The spelling of 128143007 in words is "one hundred twenty-eight million, one hundred forty-three thousand, seven".
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