123042555426 has 32 divisors (see below), whose sum is σ = 297783665280. Its totient is φ = 33087073536.

The previous prime is 123042555407. The next prime is 123042555439. The reversal of 123042555426 is 624555240321.

123042555426 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon 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 15 ways as a sum of consecutive naturals, for example, 86163541 + ... + 86164968.

It is an arithmetic number, because the mean of its divisors is an integer number (9305739540).

Almost surely, 2^123042555426 is an apocalyptic number.

123042555426 is an abundant number, since it is smaller than the sum of its proper divisors (174741109854).

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

123042555426 is a wasteful number, since it uses less digits than its factorization.

123042555426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172328538.

The product of its (nonzero) digits is 288000, while the sum is 39.

Adding to 123042555426 its reverse (624555240321), we get a palindrome (747597795747).

The spelling of 123042555426 in words is "one hundred twenty-three billion, forty-two million, five hundred fifty-five thousand, four hundred twenty-six".