12810642 has 16 divisors (see below), whose sum is σ = 27592320. Its totient is φ = 3941712.

The previous prime is 12810631. The next prime is 12810647. The reversal of 12810642 is 24601821.

12810642 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12810642² = 328225096904328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12810647) 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, 82042 + ... + 82197.

It is an arithmetic number, because the mean of its divisors is an integer number (1724520).

Almost surely, 2^12810642 is an apocalyptic number.

12810642 is an abundant number, since it is smaller than the sum of its proper divisors (14781678).

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

12810642 is a wasteful number, since it uses less digits than its factorization.

12810642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164257.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 12810642 is about 3579.1957197113. The cubic root of 12810642 is about 233.9862290092.

The spelling of 12810642 in words is "twelve million, eight hundred ten thousand, six hundred forty-two".