Base | Representation |
---|---|
bin | 1111100000111… |
… | …11111001100001 |
3 | 100001220111211112 |
4 | 13300133321201 |
5 | 231304412311 |
6 | 20525353105 |
7 | 3140201651 |
oct | 760377141 |
9 | 301814745 |
10 | 130154081 |
11 | 67517762 |
12 | 37708795 |
13 | 20c70965 |
14 | 13400361 |
15 | b65e28b |
hex | 7c1fe61 |
130154081 has 2 divisors, whose sum is σ = 130154082. Its totient is φ = 130154080.
The previous prime is 130154071. The next prime is 130154093. The reversal of 130154081 is 180451031.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 105987025 + 24167056 = 10295^2 + 4916^2 .
It is a cyclic number.
It is not a de Polignac number, because 130154081 - 222 = 125959777 is a prime.
It is a super-2 number, since 2×1301540812 = 33880169601909122, which contains 22 as substring.
It is a Sophie Germain prime.
It is a Chen prime.
It is a Curzon number.
It is not a weakly prime, because it can be changed into another prime (130154021) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65077040 + 65077041.
It is an arithmetic number, because the mean of its divisors is an integer number (65077041).
Almost surely, 2130154081 is an apocalyptic number.
It is an amenable number.
130154081 is a deficient number, since it is larger than the sum of its proper divisors (1).
130154081 is an equidigital number, since it uses as much as digits as its factorization.
130154081 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 480, while the sum is 23.
The square root of 130154081 is about 11408.5091488766. The cubic root of 130154081 is about 506.7797621400.
The spelling of 130154081 in words is "one hundred thirty million, one hundred fifty-four thousand, eighty-one".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.075 sec. • engine limits •