123534452012 has 12 divisors (see below), whose sum is σ = 220784978400. Its totient is φ = 60453029616.

The previous prime is 123534452009. The next prime is 123534452047. The reversal of 123534452012 is 210254435321.

It is a self number, because there is not a number n which added to its sum of digits gives 123534452012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 328548887 + ... + 328549262.

It is an arithmetic number, because the mean of its divisors is an integer number (18398748200).

Almost surely, 2^123534452012 is an apocalyptic number.

It is an amenable number.

123534452012 is a deficient number, since it is larger than the sum of its proper divisors (97250526388).

123534452012 is a wasteful number, since it uses less digits than its factorization.

123534452012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657098200 (or 657098198 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 123534452012 its reverse (210254435321), we get a palindrome (333788887333).

The spelling of 123534452012 in words is "one hundred twenty-three billion, five hundred thirty-four million, four hundred fifty-two thousand, twelve".