12400115 has 16 divisors (see below), whose sum is σ = 18314688. Its totient is φ = 7848576.

The previous prime is 12400109. The next prime is 12400127. The reversal of 12400115 is 51100421.

It is a cyclic number.

It is not a de Polignac number, because 12400115 - 2⁸ = 12399859 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12400115.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13172 + ... + 14081.

It is an arithmetic number, because the mean of its divisors is an integer number (1144668).

Almost surely, 2^12400115 is an apocalyptic number.

12400115 is a deficient number, since it is larger than the sum of its proper divisors (5914573).

12400115 is a wasteful number, since it uses less digits than its factorization.

12400115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27278.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 12400115 is about 3521.3797011967. The cubic root of 12400115 is about 231.4596209819.

Adding to 12400115 its reverse (51100421), we get a palindrome (63500536).

The spelling of 12400115 in words is "twelve million, four hundred thousand, one hundred fifteen".