123543616 has 28 divisors (see below), whose sum is σ = 280180288. Its totient is φ = 52947072.

The previous prime is 123543571. The next prime is 123543631. The reversal of 123543616 is 616345321.

It is a tau number, because it is divible by the number of its divisors (28).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137436 + ... + 138331.

Almost surely, 2^123543616 is an apocalyptic number.

123543616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

123543616 is an abundant number, since it is smaller than the sum of its proper divisors (156636672).

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

123543616 is an equidigital number, since it uses as much as digits as its factorization.

123543616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275786 (or 275776 counting only the distinct ones).

The product of its digits is 12960, while the sum is 31.

The square root of 123543616 is about 11115.0175888300. The cubic root of 123543616 is about 498.0505639427.

Adding to 123543616 its reverse (616345321), we get a palindrome (739888937).

The spelling of 123543616 in words is "one hundred twenty-three million, five hundred forty-three thousand, six hundred sixteen".