123543412000 has 48 divisors (see below), whose sum is σ = 303546173112. Its totient is φ = 49417363200.

The previous prime is 123543411977. The next prime is 123543412001. The reversal of 123543412000 is 214345321.

It can be written as a sum of positive squares in 4 ways, for example, as 22884428176 + 100658983824 = 151276^2 + 317268^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (123543412001) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 15438927 + ... + 15446926.

Almost surely, 2^123543412000 is an apocalyptic number.

123543412000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123543412000 is an abundant number, since it is smaller than the sum of its proper divisors (180002761112).

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

123543412000 is an equidigital number, since it uses as much as digits as its factorization.

123543412000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30885878 (or 30885860 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 123543412000 its reverse (214345321), we get a palindrome (123757757321).

The spelling of 123543412000 in words is "one hundred twenty-three billion, five hundred forty-three million, four hundred twelve thousand".