12945012 has 48 divisors (see below), whose sum is σ = 31413312. Its totient is φ = 4145920.

The previous prime is 12945001. The next prime is 12945029. The reversal of 12945012 is 21054921.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40678 + ... + 40994.

It is an arithmetic number, because the mean of its divisors is an integer number (654444).

Almost surely, 2^12945012 is an apocalyptic number.

12945012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12945012 is an abundant number, since it is smaller than the sum of its proper divisors (18468300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12945012 is a wasteful number, since it uses less digits than its factorization.

12945012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448 (or 446 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 12945012 is about 3597.9177311328. The cubic root of 12945012 is about 234.8014741028.

Adding to 12945012 its reverse (21054921), we get a palindrome (33999933).

The spelling of 12945012 in words is "twelve million, nine hundred forty-five thousand, twelve".