242440507 has 2 divisors, whose sum is σ = 242440508. Its totient is φ = 242440506.

The previous prime is 242440489. The next prime is 242440559. The reversal of 242440507 is 705044242.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242440507 is a prime.

It is not a weakly prime, because it can be changed into another prime (242440207) 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, 121220253 + 121220254.

It is an arithmetic number, because the mean of its divisors is an integer number (121220254).

Almost surely, 2^242440507 is an apocalyptic number.

242440507 is a deficient number, since it is larger than the sum of its proper divisors (1).

242440507 is an equidigital number, since it uses as much as digits as its factorization.

242440507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8960, while the sum is 28.

The square root of 242440507 is about 15570.5011801162. The cubic root of 242440507 is about 623.5458519896.

Adding to 242440507 its reverse (705044242), we get a palindrome (947484749).

The spelling of 242440507 in words is "two hundred forty-two million, four hundred forty thousand, five hundred seven".