12720127 has 24 divisors (see below), whose sum is σ = 15879168. Its totient is φ = 9958080.

The previous prime is 12720107. The next prime is 12720133. The reversal of 12720127 is 72102721.

It is not a de Polignac number, because 12720127 - 2¹⁵ = 12687359 is a prime.

It is a super-2 number, since 2×12720127² = 323603261792258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12720098 and 12720107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12720107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 270618 + ... + 270664.

It is an arithmetic number, because the mean of its divisors is an integer number (661632).

Almost surely, 2^12720127 is an apocalyptic number.

12720127 is a deficient number, since it is larger than the sum of its proper divisors (3159041).

12720127 is an equidigital number, since it uses as much as digits as its factorization.

12720127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159 (or 118 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 22.

The square root of 12720127 is about 3566.5287044969. The cubic root of 12720127 is about 233.4338408275.

Adding to 12720127 its reverse (72102721), we get a palindrome (84822848).

The spelling of 12720127 in words is "twelve million, seven hundred twenty thousand, one hundred twenty-seven".