123300055 has 4 divisors (see below), whose sum is σ = 147960072. Its totient is φ = 98640040.

The previous prime is 123300043. The next prime is 123300071. The reversal of 123300055 is 550003321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 550003321 = 7 ⋅78571903.

It is a de Polignac number, because none of the positive numbers 2^k-123300055 is a prime.

It is a Duffinian number.

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, 12330001 + ... + 12330010.

It is an arithmetic number, because the mean of its divisors is an integer number (36990018).

Almost surely, 2^123300055 is an apocalyptic number.

123300055 is a deficient number, since it is larger than the sum of its proper divisors (24660017).

123300055 is an equidigital number, since it uses as much as digits as its factorization.

123300055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24660016.

The product of its (nonzero) digits is 450, while the sum is 19.

The square root of 123300055 is about 11104.0557905659. The cubic root of 123300055 is about 497.7230534351.

Adding to 123300055 its reverse (550003321), we get a palindrome (673303376).

The spelling of 123300055 in words is "one hundred twenty-three million, three hundred thousand, fifty-five".