123542321 has 8 divisors (see below), whose sum is σ = 141263040. Its totient is φ = 105839568.

The previous prime is 123542317. The next prime is 123542327. The reversal of 123542321 is 123245321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123542321 - 2² = 123542317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123542327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17330 + ... + 23396.

It is an arithmetic number, because the mean of its divisors is an integer number (17657880).

Almost surely, 2^123542321 is an apocalyptic number.

It is an amenable number.

123542321 is a deficient number, since it is larger than the sum of its proper divisors (17720719).

123542321 is an equidigital number, since it uses as much as digits as its factorization.

123542321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8983.

The product of its digits is 1440, while the sum is 23.

The square root of 123542321 is about 11114.9593341586. The cubic root of 123542321 is about 498.0488237267.

Adding to 123542321 its reverse (123245321), we get a palindrome (246787642).

The spelling of 123542321 in words is "one hundred twenty-three million, five hundred forty-two thousand, three hundred twenty-one".