122542550256 has 160 divisors (see below), whose sum is σ = 367323061248. Its totient is φ = 34478438400.

The previous prime is 122542550239. The next prime is 122542550279. The reversal of 122542550256 is 652055245221.

It is a congruent 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 in 31 ways as a sum of consecutive naturals, for example, 17190565 + ... + 17197691.

Almost surely, 2^122542550256 is an apocalyptic number.

122542550256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122542550256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183661530624).

122542550256 is an abundant number, since it is smaller than the sum of its proper divisors (244780510992).

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

122542550256 is a wasteful number, since it uses less digits than its factorization.

122542550256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7919 (or 7913 counting only the distinct ones).

The product of its (nonzero) digits is 240000, while the sum is 39.

Adding to 122542550256 its reverse (652055245221), we get a palindrome (774597795477).

The spelling of 122542550256 in words is "one hundred twenty-two billion, five hundred forty-two million, five hundred fifty thousand, two hundred fifty-six".