40243210001 has 2 divisors, whose sum is σ = 40243210002. Its totient is φ = 40243210000.

The previous prime is 40243209991. The next prime is 40243210093. The reversal of 40243210001 is 10001234204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39658731025 + 584478976 = 199145^2 + 24176^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40243210001 is a prime.

It is not a weakly prime, because it can be changed into another prime (40243200001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20121605000 + 20121605001.

It is an arithmetic number, because the mean of its divisors is an integer number (20121605001).

Almost surely, 2^40243210001 is an apocalyptic number.

It is an amenable number.

40243210001 is a deficient number, since it is larger than the sum of its proper divisors (1).

40243210001 is an equidigital number, since it uses as much as digits as its factorization.

40243210001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 40243210001 its reverse (10001234204), we get a palindrome (50244444205).

The spelling of 40243210001 in words is "forty billion, two hundred forty-three million, two hundred ten thousand, one".