12642307 has 4 divisors (see below), whose sum is σ = 12712336. Its totient is φ = 12572280.

The previous prime is 12642299. The next prime is 12642317. The reversal of 12642307 is 70324621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12642307 - 2³ = 12642299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12642317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34743 + ... + 35104.

It is an arithmetic number, because the mean of its divisors is an integer number (3178084).

Almost surely, 2^12642307 is an apocalyptic number.

12642307 is a deficient number, since it is larger than the sum of its proper divisors (70029).

12642307 is an equidigital number, since it uses as much as digits as its factorization.

12642307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70028.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 12642307 is about 3555.6021993468. The cubic root of 12642307 is about 232.9568279471.

Adding to 12642307 its reverse (70324621), we get a palindrome (82966928).

The spelling of 12642307 in words is "twelve million, six hundred forty-two thousand, three hundred seven".