12404026 has 4 divisors (see below), whose sum is σ = 18606042. Its totient is φ = 6202012.

The previous prime is 12404023. The next prime is 12404053. The reversal of 12404026 is 62040421.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11566801 + 837225 = 3401^2 + 915^2 .

It is a super-2 number, since 2×12404026² = 307719722017352, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12403994 and 12404012.

It is not an unprimeable number, because it can be changed into a prime (12404023) 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 as a sum of consecutive naturals, namely, 3101005 + ... + 3101008.

Almost surely, 2^12404026 is an apocalyptic number.

12404026 is a deficient number, since it is larger than the sum of its proper divisors (6202016).

12404026 is an equidigital number, since it uses as much as digits as its factorization.

12404026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6202015.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 12404026 is about 3521.9349795247. The cubic root of 12404026 is about 231.4839525687.

Adding to 12404026 its reverse (62040421), we get a palindrome (74444447).

The spelling of 12404026 in words is "twelve million, four hundred four thousand, twenty-six".