Base | Representation |
---|---|
bin | 1100001010010… |
… | …11101101111001 |
3 | 21002222020212221 |
4 | 12011023231321 |
5 | 202104201014 |
6 | 14042404041 |
7 | 2346113155 |
oct | 605135571 |
9 | 232866787 |
10 | 102022009 |
11 | 52652711 |
12 | 2a200621 |
13 | 181a0c6b |
14 | d79a065 |
15 | 8e53b24 |
hex | 614bb79 |
102022009 has 2 divisors, whose sum is σ = 102022010. Its totient is φ = 102022008.
The previous prime is 102022003. The next prime is 102022027. The reversal of 102022009 is 900220201.
It is a happy number.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 98010000 + 4012009 = 9900^2 + 2003^2 .
It is an emirp because it is prime and its reverse (900220201) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 102022009 - 25 = 102021977 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 102021983 and 102022001.
It is not a weakly prime, because it can be changed into another prime (102022003) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51011004 + 51011005.
It is an arithmetic number, because the mean of its divisors is an integer number (51011005).
Almost surely, 2102022009 is an apocalyptic number.
It is an amenable number.
102022009 is a deficient number, since it is larger than the sum of its proper divisors (1).
102022009 is an equidigital number, since it uses as much as digits as its factorization.
102022009 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 72, while the sum is 16.
The square root of 102022009 is about 10100.5944874547. The cubic root of 102022009 is about 467.2664760668.
The spelling of 102022009 in words is "one hundred two million, twenty-two thousand, nine".
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