Base | Representation |
---|---|
bin | 1111100011100… |
… | …10001010100001 |
3 | 100002112122001112 |
4 | 13301302022201 |
5 | 231401203131 |
6 | 20540513105 |
7 | 3143104232 |
oct | 761621241 |
9 | 302478045 |
10 | 130491041 |
11 | 6772793a |
12 | 3784b795 |
13 | 2105b145 |
14 | 1348b089 |
15 | b6c902b |
hex | 7c722a1 |
130491041 has 4 divisors (see below), whose sum is σ = 130810500. Its totient is φ = 130171584.
The previous prime is 130491019. The next prime is 130491043. The reversal of 130491041 is 140194031.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 140194031 = 2797 ⋅50123.
It can be written as a sum of positive squares in 2 ways, for example, as 92236816 + 38254225 = 9604^2 + 6185^2 .
It is a cyclic number.
It is not a de Polignac number, because 130491041 - 26 = 130490977 is a prime.
It is a Duffinian number.
It is a Curzon number.
It is a junction number, because it is equal to n+sod(n) for n = 130490998 and 130491016.
It is not an unprimeable number, because it can be changed into a prime (130491043) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159116 + ... + 159933.
It is an arithmetic number, because the mean of its divisors is an integer number (32702625).
Almost surely, 2130491041 is an apocalyptic number.
It is an amenable number.
130491041 is a deficient number, since it is larger than the sum of its proper divisors (319459).
130491041 is an equidigital number, since it uses as much as digits as its factorization.
130491041 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 319458.
The product of its (nonzero) digits is 432, while the sum is 23.
The square root of 130491041 is about 11423.2675272883. The cubic root of 130491041 is about 507.2167246311.
The spelling of 130491041 in words is "one hundred thirty million, four hundred ninety-one thousand, forty-one".
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