12642292 has 12 divisors (see below), whose sum is σ = 23825956. Its totient is φ = 5834880.

The previous prime is 12642283. The next prime is 12642293. The reversal of 12642292 is 29224621.

It can be written as a sum of positive squares in 2 ways, for example, as 4553956 + 8088336 = 2134^2 + 2844^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12642292.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12642293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121509 + ... + 121612.

Almost surely, 2^12642292 is an apocalyptic number.

It is an amenable number.

12642292 is a deficient number, since it is larger than the sum of its proper divisors (11183664).

12642292 is a wasteful number, since it uses less digits than its factorization.

12642292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243138 (or 243136 counting only the distinct ones).

The product of its digits is 3456, while the sum is 28.

The square root of 12642292 is about 3555.6000899989. The cubic root of 12642292 is about 232.9567358133.

The spelling of 12642292 in words is "twelve million, six hundred forty-two thousand, two hundred ninety-two".