123345099 has 12 divisors (see below), whose sum is σ = 184764216. Its totient is φ = 82229904.

The previous prime is 123345083. The next prime is 123345119. The reversal of 123345099 is 990543321.

It is a happy number.

It is not a de Polignac number, because 123345099 - 2⁴ = 123345083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123345029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 253554 + ... + 254039.

It is an arithmetic number, because the mean of its divisors is an integer number (15397018).

Almost surely, 2^123345099 is an apocalyptic number.

123345099 is a deficient number, since it is larger than the sum of its proper divisors (61419117).

123345099 is an frugal number, since it uses more digits than its factorization.

123345099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507608 (or 507596 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 123345099 is about 11106.0838732651. The cubic root of 123345099 is about 497.7836554834.

The spelling of 123345099 in words is "one hundred twenty-three million, three hundred forty-five thousand, ninety-nine".