12127418 has 4 divisors (see below), whose sum is σ = 18191130. Its totient is φ = 6063708.

The previous prime is 12127411. The next prime is 12127433. The reversal of 12127418 is 81472121.

12127418 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81472121 = 491 ⋅165931.

It can be written as a sum of positive squares in only one way, i.e., 10004569 + 2122849 = 3163^2 + 1457^2 .

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (12127411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3031853 + ... + 3031856.

Almost surely, 2^12127418 is an apocalyptic number.

12127418 is a deficient number, since it is larger than the sum of its proper divisors (6063712).

12127418 is an equidigital number, since it uses as much as digits as its factorization.

12127418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6063711.

The product of its digits is 896, while the sum is 26.

The square root of 12127418 is about 3482.4442565531. Note that the first 3 decimals coincide. The cubic root of 12127418 is about 229.7503150548.

Adding to 12127418 its reverse (81472121), we get a palindrome (93599539).

The spelling of 12127418 in words is "twelve million, one hundred twenty-seven thousand, four hundred eighteen".