123420443112 has 48 divisors (see below), whose sum is σ = 334280602500. Its totient is φ = 41138067456.

The previous prime is 123420443099. The next prime is 123420443131. The reversal of 123420443112 is 211344024321.

123420443112 is a `hidden beast` number, since 1 + 2 + 342 + 0 + 4 + 4 + 311 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 117823308516 + 5597134596 = 343254^2 + 74814^2 .

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 2170014 + ... + 2226162.

Almost surely, 2^123420443112 is an apocalyptic number.

123420443112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123420443112 is an abundant number, since it is smaller than the sum of its proper divisors (210860159388).

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

123420443112 is a wasteful number, since it uses less digits than its factorization.

123420443112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86690 (or 86683 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 123420443112 its reverse (211344024321), we get a palindrome (334764467433).

The spelling of 123420443112 in words is "one hundred twenty-three billion, four hundred twenty million, four hundred forty-three thousand, one hundred twelve".