Base | Representation |
---|---|
bin | 100100000100101… |
… | …1001000001011101 |
3 | 10010100121202221001 |
4 | 1020021121001131 |
5 | 4434331440331 |
6 | 320035310301 |
7 | 41665261123 |
oct | 11011310135 |
9 | 3110552831 |
10 | 1210421341 |
11 | 571284518 |
12 | 29944b391 |
13 | 163a02a5c |
14 | b6a83913 |
15 | 713e8561 |
hex | 4825905d |
1210421341 has 2 divisors, whose sum is σ = 1210421342. Its totient is φ = 1210421340.
The previous prime is 1210421323. The next prime is 1210421351. The reversal of 1210421341 is 1431240121.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 1156340025 + 54081316 = 34005^2 + 7354^2 .
It is an emirp because it is prime and its reverse (1431240121) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 1210421341 - 27 = 1210421213 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (1210421321) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605210670 + 605210671.
It is an arithmetic number, because the mean of its divisors is an integer number (605210671).
Almost surely, 21210421341 is an apocalyptic number.
It is an amenable number.
1210421341 is a deficient number, since it is larger than the sum of its proper divisors (1).
1210421341 is an equidigital number, since it uses as much as digits as its factorization.
1210421341 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 192, while the sum is 19.
The square root of 1210421341 is about 34791.1100857676. The cubic root of 1210421341 is about 1065.7259088900.
Adding to 1210421341 its reverse (1431240121), we get a palindrome (2641661462).
The spelling of 1210421341 in words is "one billion, two hundred ten million, four hundred twenty-one thousand, three hundred forty-one".
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