123185973 has 4 divisors (see below), whose sum is σ = 164247968. Its totient is φ = 82123980.

The previous prime is 123185941. The next prime is 123185983. The reversal of 123185973 is 379581321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 123185973 - 2⁵ = 123185941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123185903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20530993 + ... + 20530998.

It is an arithmetic number, because the mean of its divisors is an integer number (41061992).

Almost surely, 2^123185973 is an apocalyptic number.

It is an amenable number.

123185973 is a deficient number, since it is larger than the sum of its proper divisors (41061995).

123185973 is an equidigital number, since it uses as much as digits as its factorization.

123185973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41061994.

The product of its digits is 45360, while the sum is 39.

The square root of 123185973 is about 11098.9176499333. The cubic root of 123185973 is about 497.5695018343.

The spelling of 123185973 in words is "one hundred twenty-three million, one hundred eighty-five thousand, nine hundred seventy-three".