240040403 has 2 divisors, whose sum is σ = 240040404. Its totient is φ = 240040402.

The previous prime is 240040393. The next prime is 240040439. The reversal of 240040403 is 304040042.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-240040403 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (240042403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120020201 + 120020202.

It is an arithmetic number, because the mean of its divisors is an integer number (120020202).

Almost surely, 2^240040403 is an apocalyptic number.

240040403 is a deficient number, since it is larger than the sum of its proper divisors (1).

240040403 is an equidigital number, since it uses as much as digits as its factorization.

240040403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 240040403 is about 15493.2373311713. The cubic root of 240040403 is about 621.4813718771.

Adding to 240040403 its reverse (304040042), we get a palindrome (544080445).

The spelling of 240040403 in words is "two hundred forty million, forty thousand, four hundred three".