12578123 has 4 divisors (see below), whose sum is σ = 12599928. Its totient is φ = 12556320.

The previous prime is 12578117. The next prime is 12578129. The reversal of 12578123 is 32187521.

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 (12578117) and next prime (12578129).

It is a cyclic number.

It is not a de Polignac number, because 12578123 - 2¹⁰ = 12577099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12578129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10013 + ... + 11198.

It is an arithmetic number, because the mean of its divisors is an integer number (3149982).

Almost surely, 2^12578123 is an apocalyptic number.

12578123 is a deficient number, since it is larger than the sum of its proper divisors (21805).

12578123 is an equidigital number, since it uses as much as digits as its factorization.

12578123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21804.

The product of its digits is 3360, while the sum is 29.

The square root of 12578123 is about 3546.5649578148. The cubic root of 12578123 is about 232.5619243850.

The spelling of 12578123 in words is "twelve million, five hundred seventy-eight thousand, one hundred twenty-three".