12400240001 has 2 divisors, whose sum is σ = 12400240002. Its totient is φ = 12400240000.

The previous prime is 12400239991. The next prime is 12400240019. The reversal of 12400240001 is 10004200421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6272481601 + 6127758400 = 79199^2 + 78280^2 .

It is a cyclic number.

It is not a de Polignac number, because 12400240001 - 2¹⁴ = 12400223617 is a prime.

It is not a weakly prime, because it can be changed into another prime (12400230001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6200120000 + 6200120001.

It is an arithmetic number, because the mean of its divisors is an integer number (6200120001).

Almost surely, 2^12400240001 is an apocalyptic number.

It is an amenable number.

12400240001 is a deficient number, since it is larger than the sum of its proper divisors (1).

12400240001 is an equidigital number, since it uses as much as digits as its factorization.

12400240001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 12400240001 its reverse (10004200421), we get a palindrome (22404440422).

The spelling of 12400240001 in words is "twelve billion, four hundred million, two hundred forty thousand, one".