12661126 has 8 divisors (see below), whose sum is σ = 19119600. Its totient is φ = 6287928.

The previous prime is 12661123. The next prime is 12661147. The reversal of 12661126 is 62116621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×12661126² = 320608223175752, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12661126.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12661123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20946 + ... + 21541.

It is an arithmetic number, because the mean of its divisors is an integer number (2389950).

Almost surely, 2^12661126 is an apocalyptic number.

12661126 is a deficient number, since it is larger than the sum of its proper divisors (6458474).

12661126 is a wasteful number, since it uses less digits than its factorization.

12661126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42638.

The product of its digits is 864, while the sum is 25.

The square root of 12661126 is about 3558.2476024021. The cubic root of 12661126 is about 233.0723617400.

Adding to 12661126 its reverse (62116621), we get a palindrome (74777747).

It can be divided in two parts, 1266 and 1126, that multiplied together give a triangular number (1425516 = T₁₆₈₈).

The spelling of 12661126 in words is "twelve million, six hundred sixty-one thousand, one hundred twenty-six".