Base | Representation |
---|---|
bin | 1001100100001… |
… | …01101000100101 |
3 | 12120222120102001 |
4 | 10302011220211 |
5 | 131020123031 |
6 | 11543445301 |
7 | 1663010233 |
oct | 462055045 |
9 | 176876361 |
10 | 80239141 |
11 | 41324944 |
12 | 22a56831 |
13 | 138151a8 |
14 | a929953 |
15 | 709e861 |
hex | 4c85a25 |
80239141 has 2 divisors, whose sum is σ = 80239142. Its totient is φ = 80239140.
The previous prime is 80239139. The next prime is 80239169. The reversal of 80239141 is 14193208.
It is a happy number.
It is an a-pointer prime, because the next prime (80239169) can be obtained adding 80239141 to its sum of digits (28).
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 80174116 + 65025 = 8954^2 + 255^2 .
It is a cyclic number.
It is not a de Polignac number, because 80239141 - 21 = 80239139 is a prime.
Together with 80239139, it forms a pair of twin primes.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (80239121) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40119570 + 40119571.
It is an arithmetic number, because the mean of its divisors is an integer number (40119571).
Almost surely, 280239141 is an apocalyptic number.
It is an amenable number.
80239141 is a deficient number, since it is larger than the sum of its proper divisors (1).
80239141 is an equidigital number, since it uses as much as digits as its factorization.
80239141 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 1728, while the sum is 28.
The square root of 80239141 is about 8957.6303228030. The cubic root of 80239141 is about 431.3158556292.
The spelling of 80239141 in words is "eighty million, two hundred thirty-nine thousand, one hundred forty-one".
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