123304340 has 12 divisors (see below), whose sum is σ = 258939156. Its totient is φ = 49321728.

The previous prime is 123304333. The next prime is 123304369. The reversal of 123304340 is 43403321.

It can be written as a sum of positive squares in 2 ways, for example, as 64995844 + 58308496 = 8062^2 + 7636^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 6165217 = 123304340 / (1 + 2 + 3 + 3 + 0 + 4 + 3 + 4 + 0).

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, 3082589 + ... + 3082628.

It is an arithmetic number, because the mean of its divisors is an integer number (21578263).

Almost surely, 2^123304340 is an apocalyptic number.

123304340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123304340 is an abundant number, since it is smaller than the sum of its proper divisors (135634816).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123304340 is a wasteful number, since it uses less digits than its factorization.

123304340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6165226 (or 6165224 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 123304340 is about 11104.2487364072. The cubic root of 123304340 is about 497.7288190951.

Adding to 123304340 its reverse (43403321), we get a palindrome (166707661).

The spelling of 123304340 in words is "one hundred twenty-three million, three hundred four thousand, three hundred forty".