Base | Representation |
---|---|
bin | 111101011011100… |
… | …101100111011011 |
3 | 2122211100001020002 |
4 | 331123211213123 |
5 | 4102321022024 |
6 | 250134123215 |
7 | 34353212402 |
oct | 7533454733 |
9 | 2584301202 |
10 | 1030642139 |
11 | 48985276a |
12 | 2491b050b |
13 | 1356a8527 |
14 | 9ac46639 |
15 | 607356ae |
hex | 3d6e59db |
1030642139 has 2 divisors, whose sum is σ = 1030642140. Its totient is φ = 1030642138.
The previous prime is 1030642127. The next prime is 1030642157. The reversal of 1030642139 is 9312460301.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 1030642139 - 28 = 1030641883 is a prime.
It is not a weakly prime, because it can be changed into another prime (1030642199) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515321069 + 515321070.
It is an arithmetic number, because the mean of its divisors is an integer number (515321070).
Almost surely, 21030642139 is an apocalyptic number.
1030642139 is a deficient number, since it is larger than the sum of its proper divisors (1).
1030642139 is an equidigital number, since it uses as much as digits as its factorization.
1030642139 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 3888, while the sum is 29.
The square root of 1030642139 is about 32103.6156686439. The cubic root of 1030642139 is about 1010.1114601039. Note that the first 3 decimals are identical.
The spelling of 1030642139 in words is "one billion, thirty million, six hundred forty-two thousand, one hundred thirty-nine".
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