123426204066 has 24 divisors (see below), whose sum is σ = 291734664624. Its totient is φ = 37401879960.

The previous prime is 123426204007. The next prime is 123426204089. The reversal of 123426204066 is 660402624321.

123426204066 is a `hidden beast` number, since 1 + 23 + 4 + 2 + 620 + 4 + 0 + 6 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 123426204066.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 311682136 + ... + 311682531.

It is an arithmetic number, because the mean of its divisors is an integer number (12155611026).

Almost surely, 2^123426204066 is an apocalyptic number.

123426204066 is an abundant number, since it is smaller than the sum of its proper divisors (168308460558).

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

123426204066 is a wasteful number, since it uses less digits than its factorization.

123426204066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623364686 (or 623364683 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

Adding to 123426204066 its reverse (660402624321), we get a palindrome (783828828387).

The spelling of 123426204066 in words is "one hundred twenty-three billion, four hundred twenty-six million, two hundred four thousand, sixty-six".