Base | Representation |
---|---|
bin | 110001001101… |
… | …101110011101 |
3 | 220021110020002 |
4 | 301031232131 |
5 | 11300320102 |
6 | 1140304045 |
7 | 214442024 |
oct | 61155635 |
9 | 26243202 |
10 | 12901277 |
11 | 7311a14 |
12 | 43a2025 |
13 | 28992bc |
14 | 19db8bb |
15 | 11ec902 |
hex | c4db9d |
12901277 has 2 divisors, whose sum is σ = 12901278. Its totient is φ = 12901276.
The previous prime is 12901267. The next prime is 12901279. The reversal of 12901277 is 77210921.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 9114361 + 3786916 = 3019^2 + 1946^2 .
It is an emirp because it is prime and its reverse (77210921) is a distict prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-12901277 is a prime.
Together with 12901279, it forms a pair of twin primes.
It is a Chen prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (12901279) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6450638 + 6450639.
It is an arithmetic number, because the mean of its divisors is an integer number (6450639).
Almost surely, 212901277 is an apocalyptic number.
It is an amenable number.
12901277 is a deficient number, since it is larger than the sum of its proper divisors (1).
12901277 is an equidigital number, since it uses as much as digits as its factorization.
12901277 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 1764, while the sum is 29.
The square root of 12901277 is about 3591.8347679146. The cubic root of 12901277 is about 234.5367484836.
The spelling of 12901277 in words is "twelve million, nine hundred one thousand, two hundred seventy-seven".
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