123243354034205 has 16 divisors (see below), whose sum is σ = 148095477304704. Its totient is φ = 98459051327040.

The previous prime is 123243354034201. The next prime is 123243354034217. The reversal of 123243354034205 is 502430453342321.

It is not a de Polignac number, because 123243354034205 - 2² = 123243354034201 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123243354034201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 496362440 + ... + 496610670.

It is an arithmetic number, because the mean of its divisors is an integer number (9255967331544).

Almost surely, 2^{123243354034205} is an apocalyptic number.

It is an amenable number.

123243354034205 is a deficient number, since it is larger than the sum of its proper divisors (24852123270499).

123243354034205 is a wasteful number, since it uses less digits than its factorization.

123243354034205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384436.

The product of its (nonzero) digits is 1036800, while the sum is 41.

The spelling of 123243354034205 in words is "one hundred twenty-three trillion, two hundred forty-three billion, three hundred fifty-four million, thirty-four thousand, two hundred five".