Base | Representation |
---|---|
bin | 11100010101011010… |
… | …111001001010011011 |
3 | 2220112022101120111021 |
4 | 130111122321022123 |
5 | 444302040024431 |
6 | 21550542543311 |
7 | 2124636641611 |
oct | 342532711233 |
9 | 86468346437 |
10 | 30424142491 |
11 | 119a26a9616 |
12 | 5a90b97b37 |
13 | 2b3b20a4a2 |
14 | 16888d56b1 |
15 | bd0eaab11 |
hex | 7156b929b |
30424142491 has 2 divisors, whose sum is σ = 30424142492. Its totient is φ = 30424142490.
The previous prime is 30424142459. The next prime is 30424142501. The reversal of 30424142491 is 19424142403.
It is a strong prime.
It is an emirp because it is prime and its reverse (19424142403) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 30424142491 - 25 = 30424142459 is a prime.
It is not a weakly prime, because it can be changed into another prime (30424145491) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15212071245 + 15212071246.
It is an arithmetic number, because the mean of its divisors is an integer number (15212071246).
Almost surely, 230424142491 is an apocalyptic number.
30424142491 is a deficient number, since it is larger than the sum of its proper divisors (1).
30424142491 is an equidigital number, since it uses as much as digits as its factorization.
30424142491 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 27648, while the sum is 34.
Adding to 30424142491 its reverse (19424142403), we get a palindrome (49848284894).
The spelling of 30424142491 in words is "thirty billion, four hundred twenty-four million, one hundred forty-two thousand, four hundred ninety-one".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.074 sec. • engine limits •