12643342 has 16 divisors (see below), whose sum is σ = 20176992. Its totient is φ = 5921280.

The previous prime is 12643313. The next prime is 12643349. The reversal of 12643342 is 24334621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12643349) 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, 7423 + ... + 8965.

It is an arithmetic number, because the mean of its divisors is an integer number (1261062).

Almost surely, 2^12643342 is an apocalyptic number.

12643342 is a deficient number, since it is larger than the sum of its proper divisors (7533650).

12643342 is a wasteful number, since it uses less digits than its factorization.

12643342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1803.

The product of its digits is 3456, while the sum is 25.

The square root of 12643342 is about 3555.7477413337. The cubic root of 12643342 is about 232.9631850078.

Adding to 12643342 its reverse (24334621), we get a palindrome (36977963).

The spelling of 12643342 in words is "twelve million, six hundred forty-three thousand, three hundred forty-two".