242431155 has 96 divisors (see below), whose sum is σ = 467026560. Its totient is φ = 115906560.

The previous prime is 242431121. The next prime is 242431187. The reversal of 242431155 is 551134242.

It is not a de Polignac number, because 242431155 - 2¹⁹ = 241906867 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1230517 + ... + 1230713.

It is an arithmetic number, because the mean of its divisors is an integer number (4864860).

Almost surely, 2^242431155 is an apocalyptic number.

242431155 is a deficient number, since it is larger than the sum of its proper divisors (224595405).

242431155 is a wasteful number, since it uses less digits than its factorization.

242431155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301 (or 298 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 242431155 is about 15570.2008657564. The cubic root of 242431155 is about 623.5378342483.

Adding to 242431155 its reverse (551134242), we get a palindrome (793565397).

The spelling of 242431155 in words is "two hundred forty-two million, four hundred thirty-one thousand, one hundred fifty-five".