12418078 has 4 divisors (see below), whose sum is σ = 18627120. Its totient is φ = 6209038.

The previous prime is 12418069. The next prime is 12418079. The reversal of 12418078 is 87081421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87081421 = 7 ⋅12440203.

It is a super-2 number, since 2×12418078² = 308417322428168, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12418079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3104518 + ... + 3104521.

It is an arithmetic number, because the mean of its divisors is an integer number (4656780).

Almost surely, 2^12418078 is an apocalyptic number.

12418078 is a deficient number, since it is larger than the sum of its proper divisors (6209042).

12418078 is an equidigital number, since it uses as much as digits as its factorization.

12418078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6209041.

The product of its (nonzero) digits is 3584, while the sum is 31.

The square root of 12418078 is about 3523.9293409488. The cubic root of 12418078 is about 231.5713323960.

Adding to 12418078 its reverse (87081421), we get a palindrome (99499499).

The spelling of 12418078 in words is "twelve million, four hundred eighteen thousand, seventy-eight".