12540127 has 2 divisors, whose sum is σ = 12540128. Its totient is φ = 12540126.

The previous prime is 12540119. The next prime is 12540149. The reversal of 12540127 is 72104521.

It is a happy number.

It is an a-pointer prime, because the next prime (12540149) can be obtained adding 12540127 to its sum of digits (22).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12540127 - 2³ = 12540119 is a prime.

It is a super-2 number, since 2×12540127² = 314509570352258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12540098 and 12540107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12540167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6270063 + 6270064.

It is an arithmetic number, because the mean of its divisors is an integer number (6270064).

Almost surely, 2^12540127 is an apocalyptic number.

12540127 is a deficient number, since it is larger than the sum of its proper divisors (1).

12540127 is an equidigital number, since it uses as much as digits as its factorization.

12540127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 12540127 is about 3541.2041737240. The cubic root of 12540127 is about 232.3275137995.

Adding to 12540127 its reverse (72104521), we get a palindrome (84644648).

The spelling of 12540127 in words is "twelve million, five hundred forty thousand, one hundred twenty-seven".