• Deleting all the even digits from 21027 we obtain a prime of 155 digits.
1027 is nontrivially palindromic in base 12 and base 14.
It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 7201 = 19 ⋅379.
It is a Duffinian number.
1027 is an undulating number in base 12 and base 14.
It is a nialpdrome in base 6, base 11 and base 13.
1027 is the 19-th hex number.
1027 is an equidigital number, since it uses as much as digits as its factorization.
1027 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 92.
The square root of 1027 is about 32.0468407179. The cubic root of 1027 is about 10.0892019355.
Adding to 1027 its reverse (7201), we get a palindrome (8228).
The spelling of 1027 in words is "one thousand, twenty-seven", and thus it is an iban number.