12440115 has 32 divisors (see below), whose sum is σ = 22640640. Its totient is φ = 6477408.

The previous prime is 12440111. The next prime is 12440119. The reversal of 12440115 is 51104421.

It is an interprime number because it is at equal distance from previous prime (12440111) and next prime (12440119).

It is not a de Polignac number, because 12440115 - 2² = 12440111 is a prime.

It is a super-2 number, since 2×12440115² = 309512922426450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12440111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4734 + ... + 6876.

It is an arithmetic number, because the mean of its divisors is an integer number (707520).

Almost surely, 2^12440115 is an apocalyptic number.

12440115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12440115 is a deficient number, since it is larger than the sum of its proper divisors (10200525).

12440115 is a wasteful number, since it uses less digits than its factorization.

12440115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2200 (or 2194 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 12440115 is about 3527.0547203013. The cubic root of 12440115 is about 231.7082328559.

Adding to 12440115 its reverse (51104421), we get a palindrome (63544536).

The spelling of 12440115 in words is "twelve million, four hundred forty thousand, one hundred fifteen".