12642819 has 8 divisors (see below), whose sum is σ = 19265280. Its totient is φ = 7224456.

The previous prime is 12642803. The next prime is 12642827. The reversal of 12642819 is 91824621.

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

It is not a de Polignac number, because 12642819 - 2⁴ = 12642803 is a prime.

It is a super-2 number, since 2×12642819² = 319681744533522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12642819.

It is not an unprimeable number, because it can be changed into a prime (12642319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 300999 + ... + 301040.

It is an arithmetic number, because the mean of its divisors is an integer number (2408160).

Almost surely, 2^12642819 is an apocalyptic number.

12642819 is a deficient number, since it is larger than the sum of its proper divisors (6622461).

12642819 is an equidigital number, since it uses as much as digits as its factorization.

12642819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602049.

The product of its digits is 6912, while the sum is 33.

The square root of 12642819 is about 3555.6741976733. The cubic root of 12642819 is about 232.9599727393.

The spelling of 12642819 in words is "twelve million, six hundred forty-two thousand, eight hundred nineteen".