Base | Representation |
---|---|
bin | 101000001100… |
… | …0110011100111 |
3 | 1110122121220012 |
4 | 1100120303213 |
5 | 20343320002 |
6 | 2031400435 |
7 | 344055455 |
oct | 120306347 |
9 | 43577805 |
10 | 21073127 |
11 | 10993609 |
12 | 708311b |
13 | 449aa0a |
14 | 2b279d5 |
15 | 1cb3d52 |
hex | 1418ce7 |
21073127 has 2 divisors, whose sum is σ = 21073128. Its totient is φ = 21073126.
The previous prime is 21073103. The next prime is 21073141. The reversal of 21073127 is 72137012.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 21073127 - 212 = 21069031 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (21073177) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10536563 + 10536564.
It is an arithmetic number, because the mean of its divisors is an integer number (10536564).
Almost surely, 221073127 is an apocalyptic number.
21073127 is a deficient number, since it is larger than the sum of its proper divisors (1).
21073127 is an equidigital number, since it uses as much as digits as its factorization.
21073127 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 588, while the sum is 23.
The square root of 21073127 is about 4590.5475708242. The cubic root of 21073127 is about 276.2122876660.
It can be divided in two parts, 210 and 73127, that added together give a palindrome (73337).
The spelling of 21073127 in words is "twenty-one million, seventy-three thousand, one hundred twenty-seven".
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