123434543000 has 128 divisors (see below), whose sum is σ = 293275382400. Its totient is φ = 48620736000.

The previous prime is 123434542991. The next prime is 123434543009. The reversal of 123434543000 is 345434321.

It is an interprime number because it is at equal distance from previous prime (123434542991) and next prime (123434543009).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123434543009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18199610 + ... + 18206390.

It is an arithmetic number, because the mean of its divisors is an integer number (2291213925).

Almost surely, 2^123434543000 is an apocalyptic number.

123434543000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123434543000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146637691200).

123434543000 is an abundant number, since it is smaller than the sum of its proper divisors (169840839400).

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

123434543000 is a wasteful number, since it uses less digits than its factorization.

123434543000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7078 (or 7064 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 29.

Adding to 123434543000 its reverse (345434321), we get a palindrome (123779977321).

The spelling of 123434543000 in words is "one hundred twenty-three billion, four hundred thirty-four million, five hundred forty-three thousand".