123929321 has 4 divisors (see below), whose sum is σ = 124038144. Its totient is φ = 123820500.

The previous prime is 123929279. The next prime is 123929327.

123929321 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 123929321 - 2⁶ = 123929257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123929327) 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 3 ways as a sum of consecutive naturals, for example, 52685 + ... + 54986.

It is an arithmetic number, because the mean of its divisors is an integer number (31009536).

Almost surely, 2^123929321 is an apocalyptic number.

It is an amenable number.

123929321 is a deficient number, since it is larger than the sum of its proper divisors (108823).

123929321 is a wasteful number, since it uses less digits than its factorization.

123929321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108822.

The product of its digits is 5832, while the sum is 32.

The square root of 123929321 is about 11132.3546925168. The cubic root of 123929321 is about 498.5683325693.

The spelling of 123929321 in words is "one hundred twenty-three million, nine hundred twenty-nine thousand, three hundred twenty-one".