12578642 has 8 divisors (see below), whose sum is σ = 18921600. Its totient is φ = 6271444.

The previous prime is 12578611. The next prime is 12578681. The reversal of 12578642 is 24687521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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, 8042 + ... + 9477.

It is an arithmetic number, because the mean of its divisors is an integer number (2365200).

Almost surely, 2^12578642 is an apocalyptic number.

12578642 is a deficient number, since it is larger than the sum of its proper divisors (6342958).

12578642 is a wasteful number, since it uses less digits than its factorization.

12578642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17880.

The product of its digits is 26880, while the sum is 35.

The square root of 12578642 is about 3546.6381264516. The cubic root of 12578642 is about 232.5651230069.

The spelling of 12578642 in words is "twelve million, five hundred seventy-eight thousand, six hundred forty-two".