123234042355 has 16 divisors (see below), whose sum is σ = 158916742560. Its totient is φ = 91403085312.

The previous prime is 123234042317. The next prime is 123234042401. The reversal of 123234042355 is 553240432321.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123234042355 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123234042355.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10813800 + ... + 10825189.

It is an arithmetic number, because the mean of its divisors is an integer number (9932296410).

Almost surely, 2^123234042355 is an apocalyptic number.

123234042355 is a deficient number, since it is larger than the sum of its proper divisors (35682700205).

123234042355 is a wasteful number, since it uses less digits than its factorization.

123234042355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21639078.

The product of its (nonzero) digits is 86400, while the sum is 34.

Adding to 123234042355 its reverse (553240432321), we get a palindrome (676474474676).

The spelling of 123234042355 in words is "one hundred twenty-three billion, two hundred thirty-four million, forty-two thousand, three hundred fifty-five".