40243001 has 2 divisors, whose sum is σ = 40243002. Its totient is φ = 40243000.

The previous prime is 40242989. The next prime is 40243019. The reversal of 40243001 is 10034204.

40243001 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., 32947600 + 7295401 = 5740^2 + 2701^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40243001 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40243051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20121500 + 20121501.

It is an arithmetic number, because the mean of its divisors is an integer number (20121501).

Almost surely, 2^40243001 is an apocalyptic number.

It is an amenable number.

40243001 is a deficient number, since it is larger than the sum of its proper divisors (1).

40243001 is an equidigital number, since it uses as much as digits as its factorization.

40243001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 40243001 is about 6343.7371477702. The cubic root of 40243001 is about 342.6863347522.

Adding to 40243001 its reverse (10034204), we get a palindrome (50277205).

The spelling of 40243001 in words is "forty million, two hundred forty-three thousand, one".