123542568 has 96 divisors (see below), whose sum is σ = 355155840. Its totient is φ = 38712960.

The previous prime is 123542567. The next prime is 123542597. The reversal of 123542568 is 865245321.

It is a super-2 number, since 2×123542568² = 30525532216069248, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (123542567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 100405 + ... + 101627.

It is an arithmetic number, because the mean of its divisors is an integer number (3699540).

Almost surely, 2^123542568 is an apocalyptic number.

123542568 is a gapful number since it is divisible by the number (18) 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 123542568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177577920).

123542568 is an abundant number, since it is smaller than the sum of its proper divisors (231613272).

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

123542568 is a wasteful number, since it uses less digits than its factorization.

123542568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1319 (or 1312 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 123542568 is about 11114.9704453048. The cubic root of 123542568 is about 498.0491556453.

Adding to 123542568 its reverse (865245321), we get a palindrome (988787889).

The spelling of 123542568 in words is "one hundred twenty-three million, five hundred forty-two thousand, five hundred sixty-eight".