Base | Representation |
---|---|
bin | 111110101111101… |
… | …0110110111101101 |
3 | 12102201121222121222 |
4 | 1331133112313231 |
5 | 13302433402031 |
6 | 544525233125 |
7 | 103113240125 |
oct | 17537266755 |
9 | 5381558558 |
10 | 2105372141 |
11 | 990478284 |
12 | 4a91027a5 |
13 | 27724c142 |
14 | 15d887c85 |
15 | c4c78e7b |
hex | 7d7d6ded |
2105372141 has 2 divisors, whose sum is σ = 2105372142. Its totient is φ = 2105372140.
The previous prime is 2105372077. The next prime is 2105372177. The reversal of 2105372141 is 1412735012.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 2099564041 + 5808100 = 45821^2 + 2410^2 .
It is a cyclic number.
It is not a de Polignac number, because 2105372141 - 26 = 2105372077 is a prime.
It is a self number, because there is not a number n which added to its sum of digits gives 2105372141.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (2105372741) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (23) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1052686070 + 1052686071.
It is an arithmetic number, because the mean of its divisors is an integer number (1052686071).
Almost surely, 22105372141 is an apocalyptic number.
It is an amenable number.
2105372141 is a deficient number, since it is larger than the sum of its proper divisors (1).
2105372141 is an equidigital number, since it uses as much as digits as its factorization.
2105372141 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 1680, while the sum is 26.
The square root of 2105372141 is about 45884.3343745989. The cubic root of 2105372141 is about 1281.6702116394.
The spelling of 2105372141 in words is "two billion, one hundred five million, three hundred seventy-two thousand, one hundred forty-one".
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