123165645342 has 16 divisors (see below), whose sum is σ = 246490953600. Its totient is φ = 41028604632.

The previous prime is 123165645331. The next prime is 123165645347. The reversal of 123165645342 is 243546561321.

It is a super-3 number, since 3×123165645342³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 123165645294 and 123165645303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123165645347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6642592 + ... + 6661107.

It is an arithmetic number, because the mean of its divisors is an integer number (15405684600).

Almost surely, 2^123165645342 is an apocalyptic number.

123165645342 is an abundant number, since it is smaller than the sum of its proper divisors (123325308258).

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

123165645342 is a wasteful number, since it uses less digits than its factorization.

123165645342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13305247.

The product of its digits is 518400, while the sum is 42.

The spelling of 123165645342 in words is "one hundred twenty-three billion, one hundred sixty-five million, six hundred forty-five thousand, three hundred forty-two".