242821755922 has 4 divisors (see below), whose sum is σ = 364232633886. Its totient is φ = 121410877960.

The previous prime is 242821755893. The next prime is 242821755931. The reversal of 242821755922 is 229557128242.

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

It can be written as a sum of positive squares in only one way, i.e., 158906674161 + 83915081761 = 398631^2 + 289681^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 60705438979 + ... + 60705438982.

Almost surely, 2^242821755922 is an apocalyptic number.

242821755922 is a deficient number, since it is larger than the sum of its proper divisors (121410877964).

242821755922 is a wasteful number, since it uses less digits than its factorization.

242821755922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121410877963.

The product of its digits is 1612800, while the sum is 49.

The spelling of 242821755922 in words is "two hundred forty-two billion, eight hundred twenty-one million, seven hundred fifty-five thousand, nine hundred twenty-two".