255122320244442 has 32 divisors (see below), whose sum is σ = 595543896502272. Its totient is φ = 71341195934064.

The previous prime is 255122320244423. The next prime is 255122320244443. The reversal of 255122320244442 is 244442023221552.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 255122320244394 and 255122320244403.

It is not an unprimeable number, because it can be changed into a prime (255122320244443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64620646518 + ... + 64620650465.

It is an arithmetic number, because the mean of its divisors is an integer number (18610746765696).

Almost surely, 2^{255122320244442} is an apocalyptic number.

255122320244442 is an abundant number, since it is smaller than the sum of its proper divisors (340421576257830).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255122320244442 is a wasteful number, since it uses less digits than its factorization.

255122320244442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129241297042.

The product of its (nonzero) digits is 1228800, while the sum is 42.

Adding to 255122320244442 its reverse (244442023221552), we get a palindrome (499564343465994).

The spelling of 255122320244442 in words is "two hundred fifty-five trillion, one hundred twenty-two billion, three hundred twenty million, two hundred forty-four thousand, four hundred forty-two".