123056993 has 4 divisors (see below), whose sum is σ = 123694788. Its totient is φ = 122419200.

The previous prime is 123056953. The next prime is 123057001. The reversal of 123056993 is 399650321.

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 26388769 + 96668224 = 5137^2 + 9832^2 .

It is a cyclic number.

It is not a de Polignac number, because 123056993 - 2⁶ = 123056929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123056953) 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, 318608 + ... + 318993.

It is an arithmetic number, because the mean of its divisors is an integer number (30923697).

Almost surely, 2^123056993 is an apocalyptic number.

It is an amenable number.

123056993 is a deficient number, since it is larger than the sum of its proper divisors (637795).

123056993 is an equidigital number, since it uses as much as digits as its factorization.

123056993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637794.

The product of its (nonzero) digits is 43740, while the sum is 38.

The square root of 123056993 is about 11093.1056517100. The cubic root of 123056993 is about 497.3957836634.

The spelling of 123056993 in words is "one hundred twenty-three million, fifty-six thousand, nine hundred ninety-three".