Base | Representation |
---|---|
bin | 110001110000… |
… | …110110010011 |
3 | 220112202120022 |
4 | 301300312103 |
5 | 11314421024 |
6 | 1143334055 |
7 | 215611322 |
oct | 61606623 |
9 | 26482508 |
10 | 13045139 |
11 | 7400008 |
12 | 445132b |
13 | 2919923 |
14 | 1a380b9 |
15 | 122a35e |
hex | c70d93 |
13045139 has 2 divisors, whose sum is σ = 13045140. Its totient is φ = 13045138.
The previous prime is 13045091. The next prime is 13045147. The reversal of 13045139 is 93154031.
13045139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 13045139 - 28 = 13044883 is a prime.
It is a Sophie Germain prime.
It is a Chen prime.
It is not a weakly prime, because it can be changed into another prime (13045159) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6522569 + 6522570.
It is an arithmetic number, because the mean of its divisors is an integer number (6522570).
Almost surely, 213045139 is an apocalyptic number.
13045139 is a deficient number, since it is larger than the sum of its proper divisors (1).
13045139 is an equidigital number, since it uses as much as digits as its factorization.
13045139 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 1620, while the sum is 26.
The square root of 13045139 is about 3611.8055041765. The cubic root of 13045139 is about 235.4053002822.
The spelling of 13045139 in words is "thirteen million, forty-five thousand, one hundred thirty-nine".
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