12126418 has 8 divisors (see below), whose sum is σ = 18322812. Its totient is φ = 6018816.

The previous prime is 12126407. The next prime is 12126419. The reversal of 12126418 is 81462121.

It can be written as a sum of positive squares in 2 ways, for example, as 10909809 + 1216609 = 3303^2 + 1103^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 12126392 and 12126401.

It is not an unprimeable number, because it can be changed into a prime (12126419) 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, 21855 + ... + 22402.

Almost surely, 2^12126418 is an apocalyptic number.

12126418 is a deficient number, since it is larger than the sum of its proper divisors (6196394).

12126418 is a wasteful number, since it uses less digits than its factorization.

12126418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44396.

The product of its digits is 768, while the sum is 25.

The square root of 12126418 is about 3482.3006762771. The cubic root of 12126418 is about 229.7439999807.

Adding to 12126418 its reverse (81462121), we get a palindrome (93588539).

It can be divided in two parts, 12126 and 418, that added together give a square (12544 = 112²).

The spelling of 12126418 in words is "twelve million, one hundred twenty-six thousand, four hundred eighteen".