242431503555 has 16 divisors (see below), whose sum is σ = 387967749120. Its totient is φ = 129271020768.

The previous prime is 242431503487. The next prime is 242431503557. The reversal of 242431503555 is 555305134242.

It is not a de Polignac number, because 242431503555 - 2⁹ = 242431503043 is a prime.

It is not an unprimeable number, because it can be changed into a prime (242431503557) 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 in 15 ways as a sum of consecutive naturals, for example, 1533465 + ... + 1684154.

It is an arithmetic number, because the mean of its divisors is an integer number (24247984320).

Almost surely, 2^242431503555 is an apocalyptic number.

242431503555 is a deficient number, since it is larger than the sum of its proper divisors (145536245565).

242431503555 is a wasteful number, since it uses less digits than its factorization.

242431503555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3222650.

The product of its (nonzero) digits is 360000, while the sum is 39.

Adding to 242431503555 its reverse (555305134242), we get a palindrome (797736637797).

The spelling of 242431503555 in words is "two hundred forty-two billion, four hundred thirty-one million, five hundred three thousand, five hundred fifty-five".