12078417 has 16 divisors (see below), whose sum is σ = 17413760. Its totient is φ = 7402752.

The previous prime is 12078403. The next prime is 12078419. The reversal of 12078417 is 71487021.

It is not a de Polignac number, because 12078417 - 2⁴ = 12078401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12078419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12684 + ... + 13602.

It is an arithmetic number, because the mean of its divisors is an integer number (1088360).

Almost surely, 2^12078417 is an apocalyptic number.

It is an amenable number.

12078417 is a deficient number, since it is larger than the sum of its proper divisors (5335343).

12078417 is a wasteful number, since it uses less digits than its factorization.

12078417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272.

The product of its (nonzero) digits is 3136, while the sum is 30.

The square root of 12078417 is about 3475.4017034006. The cubic root of 12078417 is about 229.4404609151.

The spelling of 12078417 in words is "twelve million, seventy-eight thousand, four hundred seventeen".