Base | Representation |
---|---|
bin | 101110010000… |
… | …010011100101 |
3 | 211211000221101 |
4 | 232100103211 |
5 | 11101003123 |
6 | 1111520101 |
7 | 205031026 |
oct | 56202345 |
9 | 24730841 |
10 | 12125413 |
11 | 6932003 |
12 | 4089031 |
13 | 2687101 |
14 | 1878c4d |
15 | 10e7aad |
hex | b904e5 |
12125413 has 2 divisors, whose sum is σ = 12125414. Its totient is φ = 12125412.
The previous prime is 12125359. The next prime is 12125417. The reversal of 12125413 is 31452121.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 12124324 + 1089 = 3482^2 + 33^2 .
It is an emirp because it is prime and its reverse (31452121) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 12125413 - 29 = 12124901 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (12125417) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6062706 + 6062707.
It is an arithmetic number, because the mean of its divisors is an integer number (6062707).
Almost surely, 212125413 is an apocalyptic number.
It is an amenable number.
12125413 is a deficient number, since it is larger than the sum of its proper divisors (1).
12125413 is an equidigital number, since it uses as much as digits as its factorization.
12125413 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 240, while the sum is 19.
The square root of 12125413 is about 3482.1563721349. The cubic root of 12125413 is about 229.7376529814.
Adding to 12125413 its reverse (31452121), we get a palindrome (43577534).
The spelling of 12125413 in words is "twelve million, one hundred twenty-five thousand, four hundred thirteen".
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