123204329 has 4 divisors (see below), whose sum is σ = 123557700. Its totient is φ = 122850960.

The previous prime is 123204313. The next prime is 123204397. The reversal of 123204329 is 923402321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 923402321 = 23 ⋅40147927.

It can be written as a sum of positive squares in 2 ways, for example, as 71436304 + 51768025 = 8452^2 + 7195^2 .

It is a cyclic number.

It is not a de Polignac number, because 123204329 - 2⁴ = 123204313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123204298 and 123204307.

It is not an unprimeable number, because it can be changed into a prime (123204929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176162 + ... + 176859.

It is an arithmetic number, because the mean of its divisors is an integer number (30889425).

Almost surely, 2^123204329 is an apocalyptic number.

It is an amenable number.

123204329 is a deficient number, since it is larger than the sum of its proper divisors (353371).

123204329 is an equidigital number, since it uses as much as digits as its factorization.

123204329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353370.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 123204329 is about 11099.7445466101. The cubic root of 123204329 is about 497.5942149623.

The spelling of 123204329 in words is "one hundred twenty-three million, two hundred four thousand, three hundred twenty-nine".