242542034513255 has 4 divisors (see below), whose sum is σ = 291050441415912. Its totient is φ = 194033627610600.

The previous prime is 242542034513201. The next prime is 242542034513291. The reversal of 242542034513255 is 552315430245242.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-242542034513255 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24254203451321 + ... + 24254203451330.

It is an arithmetic number, because the mean of its divisors is an integer number (72762610353978).

Almost surely, 2^{242542034513255} is an apocalyptic number.

242542034513255 is a deficient number, since it is larger than the sum of its proper divisors (48508406902657).

242542034513255 is an equidigital number, since it uses as much as digits as its factorization.

242542034513255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48508406902656.

The product of its (nonzero) digits is 5760000, while the sum is 47.

Adding to 242542034513255 its reverse (552315430245242), we get a palindrome (794857464758497).

The spelling of 242542034513255 in words is "two hundred forty-two trillion, five hundred forty-two billion, thirty-four million, five hundred thirteen thousand, two hundred fifty-five".