1234543112 has 64 divisors (see below), whose sum is σ = 2569881600. Its totient is φ = 551304000.

The previous prime is 1234543103. The next prime is 1234543129. The reversal of 1234543112 is 2113454321.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2161787 + ... + 2162357.

It is an arithmetic number, because the mean of its divisors is an integer number (40154400).

Almost surely, 2^1234543112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1234543112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1284940800).

1234543112 is an abundant number, since it is smaller than the sum of its proper divisors (1335338488).

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

1234543112 is a wasteful number, since it uses less digits than its factorization.

1234543112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978 (or 974 counting only the distinct ones).

The product of its digits is 2880, while the sum is 26.

The square root of 1234543112 is about 35136.0656875524. The cubic root of 1234543112 is about 1072.7588027242.

Adding to 1234543112 its reverse (2113454321), we get a palindrome (3347997433).

The spelling of 1234543112 in words is "one billion, two hundred thirty-four million, five hundred forty-three thousand, one hundred twelve".