242642534505 has 96 divisors (see below), whose sum is σ = 472382167296. Its totient is φ = 104163065856.

The previous prime is 242642534503. The next prime is 242642534513. The reversal of 242642534505 is 505435246242.

It is not a de Polignac number, because 242642534505 - 2¹ = 242642534503 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (242642534503) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 13858917 + ... + 13876413.

It is an arithmetic number, because the mean of its divisors is an integer number (4920647576).

Almost surely, 2^242642534505 is an apocalyptic number.

It is an amenable number.

242642534505 is a deficient number, since it is larger than the sum of its proper divisors (229739632791).

242642534505 is a wasteful number, since it uses less digits than its factorization.

242642534505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18003 (or 17986 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 42.

The spelling of 242642534505 in words is "two hundred forty-two billion, six hundred forty-two million, five hundred thirty-four thousand, five hundred five".