12940001 has 2 divisors, whose sum is σ = 12940002. Its totient is φ = 12940000.

The previous prime is 12939967. The next prime is 12940073. The reversal of 12940001 is 10004921.

It is a happy number.

12940001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9461776 + 3478225 = 3076^2 + 1865^2 .

It is an emirp because it is prime and its reverse (10004921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12940001 - 2⁶ = 12939937 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (12940201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6470000 + 6470001.

It is an arithmetic number, because the mean of its divisors is an integer number (6470001).

Almost surely, 2^12940001 is an apocalyptic number.

It is an amenable number.

12940001 is a deficient number, since it is larger than the sum of its proper divisors (1).

12940001 is an equidigital number, since it uses as much as digits as its factorization.

12940001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 12940001 is about 3597.2212887172. The cubic root of 12940001 is about 234.7711730613.

Adding to 12940001 its reverse (10004921), we get a palindrome (22944922).

The spelling of 12940001 in words is "twelve million, nine hundred forty thousand, one".