Base | Representation |
---|---|
bin | 111100111000101110… |
… | …0011111010001100101 |
3 | 110111111100112200020211 |
4 | 1321301130133101211 |
5 | 4120240042444141 |
6 | 140022231455421 |
7 | 12306110214013 |
oct | 1716134372145 |
9 | 414440480224 |
10 | 130752312421 |
11 | 504a72a9635 |
12 | 21410827571 |
13 | c4399cba03 |
14 | 648537d8b3 |
15 | 3603e1ad81 |
hex | 1e7171f465 |
130752312421 has 2 divisors, whose sum is σ = 130752312422. Its totient is φ = 130752312420.
The previous prime is 130752312413. The next prime is 130752312443. The reversal of 130752312421 is 124213257031.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 121514988100 + 9237324321 = 348590^2 + 96111^2 .
It is an emirp because it is prime and its reverse (124213257031) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 130752312421 - 23 = 130752312413 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (130752312491) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65376156210 + 65376156211.
It is an arithmetic number, because the mean of its divisors is an integer number (65376156211).
Almost surely, 2130752312421 is an apocalyptic number.
It is an amenable number.
130752312421 is a deficient number, since it is larger than the sum of its proper divisors (1).
130752312421 is an equidigital number, since it uses as much as digits as its factorization.
130752312421 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 10080, while the sum is 31.
Adding to 130752312421 its reverse (124213257031), we get a palindrome (254965569452).
The spelling of 130752312421 in words is "one hundred thirty billion, seven hundred fifty-two million, three hundred twelve thousand, four hundred twenty-one".
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