12404122 has 4 divisors (see below), whose sum is σ = 18606186. Its totient is φ = 6202060.

The previous prime is 12404089. The next prime is 12404143. The reversal of 12404122 is 22140421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22140421 = 23 ⋅962627.

It can be written as a sum of positive squares in only one way, i.e., 9678321 + 2725801 = 3111^2 + 1651^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12404096 and 12404105.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 3101029 + ... + 3101032.

Almost surely, 2^12404122 is an apocalyptic number.

12404122 is a deficient number, since it is larger than the sum of its proper divisors (6202064).

12404122 is an equidigital number, since it uses as much as digits as its factorization.

12404122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6202063.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 12404122 is about 3521.9486083701. The cubic root of 12404122 is about 231.4845497513.

Adding to 12404122 its reverse (22140421), we get a palindrome (34544543).

The spelling of 12404122 in words is "twelve million, four hundred four thousand, one hundred twenty-two".