123304645 has 4 divisors (see below), whose sum is σ = 147965580. Its totient is φ = 98643712.

The previous prime is 123304603. The next prime is 123304663. The reversal of 123304645 is 546403321.

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 50680161 + 72624484 = 7119^2 + 8522^2 .

It is a cyclic number.

It is not a de Polignac number, because 123304645 - 2¹⁵ = 123271877 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12330460 + ... + 12330469.

It is an arithmetic number, because the mean of its divisors is an integer number (36991395).

Almost surely, 2^123304645 is an apocalyptic number.

It is an amenable number.

123304645 is a deficient number, since it is larger than the sum of its proper divisors (24660935).

123304645 is an equidigital number, since it uses as much as digits as its factorization.

123304645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24660934.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 123304645 is about 11104.2624698807. The cubic root of 123304645 is about 497.7292294812.

Adding to 123304645 its reverse (546403321), we get a palindrome (669707966).

The spelling of 123304645 in words is "one hundred twenty-three million, three hundred four thousand, six hundred forty-five".