12765642 has 8 divisors (see below), whose sum is σ = 25531296. Its totient is φ = 4255212.

The previous prime is 12765631. The next prime is 12765679. The reversal of 12765642 is 24656721.

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

12765642 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1063798 + ... + 1063809.

It is an arithmetic number, because the mean of its divisors is an integer number (3191412).

Almost surely, 2^12765642 is an apocalyptic number.

12765642 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.

12765642 is a wasteful number, since it uses less digits than its factorization.

12765642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2127612.

The product of its digits is 20160, while the sum is 33.

The square root of 12765642 is about 3572.9038610072. The cubic root of 12765642 is about 233.7119327564.

The spelling of 12765642 in words is "twelve million, seven hundred sixty-five thousand, six hundred forty-two".