123018472392 has 16 divisors (see below), whose sum is σ = 307546181040. Its totient is φ = 41006157456.

The previous prime is 123018472391. The next prime is 123018472399. The reversal of 123018472392 is 293274810321.

It is a super-2 number, since 2×123018472392² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (123018472391) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2562884818 + ... + 2562884865.

It is an arithmetic number, because the mean of its divisors is an integer number (19221636315).

Almost surely, 2^123018472392 is an apocalyptic number.

123018472392 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123018472392 is an abundant number, since it is smaller than the sum of its proper divisors (184527708648).

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

123018472392 is a wasteful number, since it uses less digits than its factorization.

123018472392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5125769692 (or 5125769688 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The spelling of 123018472392 in words is "one hundred twenty-three billion, eighteen million, four hundred seventy-two thousand, three hundred ninety-two".