12642851 has 8 divisors (see below), whose sum is σ = 13688640. Its totient is φ = 11607552.

The previous prime is 12642841. The next prime is 12642853. The reversal of 12642851 is 15824621.

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

It is a cyclic number.

It is not a de Polignac number, because 12642851 - 2⁶ = 12642787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12642853) 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, 11 + ... + 5028.

It is an arithmetic number, because the mean of its divisors is an integer number (1711080).

Almost surely, 2^12642851 is an apocalyptic number.

12642851 is a deficient number, since it is larger than the sum of its proper divisors (1045789).

12642851 is a wasteful number, since it uses less digits than its factorization.

12642851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5245.

The product of its digits is 3840, while the sum is 29.

The square root of 12642851 is about 3555.6786975203. The cubic root of 12642851 is about 232.9601692860.

The spelling of 12642851 in words is "twelve million, six hundred forty-two thousand, eight hundred fifty-one".