12400118 has 4 divisors (see below), whose sum is σ = 18600180. Its totient is φ = 6200058.

The previous prime is 12400109. The next prime is 12400127. The reversal of 12400118 is 81100421.

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

It is an interprime number because it is at equal distance from previous prime (12400109) and next prime (12400127).

It is a junction number, because it is equal to n+sod(n) for n = 12400096 and 12400105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3100028 + ... + 3100031.

It is an arithmetic number, because the mean of its divisors is an integer number (4650045).

Almost surely, 2^12400118 is an apocalyptic number.

12400118 is a deficient number, since it is larger than the sum of its proper divisors (6200062).

12400118 is an equidigital number, since it uses as much as digits as its factorization.

12400118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6200061.

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 12400118 is about 3521.3801271661. The cubic root of 12400118 is about 231.4596396479.

Adding to 12400118 its reverse (81100421), we get a palindrome (93500539).

The spelling of 12400118 in words is "twelve million, four hundred thousand, one hundred eighteen".