12999642 has 8 divisors (see below), whose sum is σ = 25999296. Its totient is φ = 4333212.

The previous prime is 12999641. The next prime is 12999653. The reversal of 12999642 is 24699921.

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

12999642 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 12999594 and 12999603.

It is not an unprimeable number, because it can be changed into a prime (12999641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1083298 + ... + 1083309.

It is an arithmetic number, because the mean of its divisors is an integer number (3249912).

Almost surely, 2^12999642 is an apocalyptic number.

12999642 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12999642 is a wasteful number, since it uses less digits than its factorization.

12999642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2166612.

The product of its digits is 69984, while the sum is 42.

The square root of 12999642 is about 3605.5016294546. The cubic root of 12999642 is about 235.1313103476.

The spelling of 12999642 in words is "twelve million, nine hundred ninety-nine thousand, six hundred forty-two".