Base | Representation |
---|---|
bin | 1111100000111… |
… | …00111111010001 |
3 | 100001212220111001 |
4 | 13300130333101 |
5 | 231304022121 |
6 | 20525222001 |
7 | 3140122132 |
oct | 760347721 |
9 | 301786431 |
10 | 130142161 |
11 | 67509806 |
12 | 37701901 |
13 | 20c683c6 |
14 | 133d9c89 |
15 | b65a991 |
hex | 7c1cfd1 |
130142161 has 2 divisors, whose sum is σ = 130142162. Its totient is φ = 130142160.
The previous prime is 130142093. The next prime is 130142179. The reversal of 130142161 is 161241031.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 101626561 + 28515600 = 10081^2 + 5340^2 .
It is a cyclic number.
It is not a de Polignac number, because 130142161 - 223 = 121753553 is a prime.
It is a Chen prime.
It is not a weakly prime, because it can be changed into another prime (130142261) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65071080 + 65071081.
It is an arithmetic number, because the mean of its divisors is an integer number (65071081).
Almost surely, 2130142161 is an apocalyptic number.
It is an amenable number.
130142161 is a deficient number, since it is larger than the sum of its proper divisors (1).
130142161 is an equidigital number, since it uses as much as digits as its factorization.
130142161 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 144, while the sum is 19.
The square root of 130142161 is about 11407.9867198380. The cubic root of 130142161 is about 506.7642907358.
Adding to 130142161 its reverse (161241031), we get a palindrome (291383192).
The spelling of 130142161 in words is "one hundred thirty million, one hundred forty-two thousand, one hundred sixty-one".
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