123545321 has 8 divisors (see below), whose sum is σ = 127674624. Its totient is φ = 119473200.

The previous prime is 123545299. The next prime is 123545327.

It is a happy number.

123545321 is nontrivially palindromic in base 10.

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 123545321 - 2¹⁸ = 123283177 is a prime.

It is a super-3 number, since 3×123545321³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123545327) 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, 9881 + ... + 18566.

It is an arithmetic number, because the mean of its divisors is an integer number (15959328).

Almost surely, 2^123545321 is an apocalyptic number.

It is an amenable number.

123545321 is a deficient number, since it is larger than the sum of its proper divisors (4129303).

123545321 is a wasteful number, since it uses less digits than its factorization.

123545321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28591.

The product of its digits is 3600, while the sum is 26.

The square root of 123545321 is about 11115.0942865996. The cubic root of 123545321 is about 498.0528550966.

The spelling of 123545321 in words is "one hundred twenty-three million, five hundred forty-five thousand, three hundred twenty-one".