12642003 has 24 divisors (see below), whose sum is σ = 20036016. Its totient is φ = 7617600.

The previous prime is 12642001. The next prime is 12642031. The reversal of 12642003 is 30024621.

It is a happy number.

12642003 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12642003 - 2¹ = 12642001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12642001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27193 + ... + 27653.

It is an arithmetic number, because the mean of its divisors is an integer number (834834).

Almost surely, 2^12642003 is an apocalyptic number.

12642003 is a deficient number, since it is larger than the sum of its proper divisors (7394013).

12642003 is a wasteful number, since it uses less digits than its factorization.

12642003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755 (or 752 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 12642003 is about 3555.5594496506. The cubic root of 12642003 is about 232.9549606866.

Adding to 12642003 its reverse (30024621), we get a palindrome (42666624).

The spelling of 12642003 in words is "twelve million, six hundred forty-two thousand, three".