12126575 has 6 divisors (see below), whose sum is σ = 15036984. Its totient is φ = 9701240.

The previous prime is 12126571. The next prime is 12126619. The reversal of 12126575 is 57562121.

It is not a de Polignac number, because 12126575 - 2² = 12126571 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12126571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 242507 + ... + 242556.

It is an arithmetic number, because the mean of its divisors is an integer number (2506164).

Almost surely, 2^12126575 is an apocalyptic number.

12126575 is a deficient number, since it is larger than the sum of its proper divisors (2910409).

12126575 is an equidigital number, since it uses as much as digits as its factorization.

12126575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485073 (or 485068 counting only the distinct ones).

The product of its digits is 4200, while the sum is 29.

The square root of 12126575 is about 3482.3232187722. The cubic root of 12126575 is about 229.7449914703.

Adding to 12126575 its reverse (57562121), we get a palindrome (69688696).

The spelling of 12126575 in words is "twelve million, one hundred twenty-six thousand, five hundred seventy-five".