123053105405 has 32 divisors (see below), whose sum is σ = 158429779200. Its totient is φ = 91421965312.

The previous prime is 123053105387. The next prime is 123053105419. The reversal of 123053105405 is 504501350321.

It is a cyclic number.

It is not a de Polignac number, because 123053105405 - 2¹⁴ = 123053089021 is a prime.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 5908751 + ... + 5929539.

It is an arithmetic number, because the mean of its divisors is an integer number (4950930600).

Almost surely, 2^123053105405 is an apocalyptic number.

It is an amenable number.

123053105405 is a deficient number, since it is larger than the sum of its proper divisors (35376673795).

123053105405 is a wasteful number, since it uses less digits than its factorization.

123053105405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21733.

The product of its (nonzero) digits is 9000, while the sum is 29.

Adding to 123053105405 its reverse (504501350321), we get a palindrome (627554455726).

The spelling of 123053105405 in words is "one hundred twenty-three billion, fifty-three million, one hundred five thousand, four hundred five".