123245321 has 4 divisors (see below), whose sum is σ = 123319812. Its totient is φ = 123170832.

The previous prime is 123245249. The next prime is 123245357. The reversal of 123245321 is 123542321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 60217600 + 63027721 = 7760^2 + 7939^2 .

It is a cyclic number.

It is not a de Polignac number, because 123245321 - 2¹⁸ = 122983177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123245021) 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, 34706 + ... + 38091.

It is an arithmetic number, because the mean of its divisors is an integer number (30829953).

Almost surely, 2^123245321 is an apocalyptic number.

It is an amenable number.

123245321 is a deficient number, since it is larger than the sum of its proper divisors (74491).

123245321 is an equidigital number, since it uses as much as digits as its factorization.

123245321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74490.

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

The square root of 123245321 is about 11101.5909220255. The cubic root of 123245321 is about 497.6493946260.

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

The spelling of 123245321 in words is "one hundred twenty-three million, two hundred forty-five thousand, three hundred twenty-one".