123004857 has 4 divisors (see below), whose sum is σ = 164006480. Its totient is φ = 82003236.

The previous prime is 123004789. The next prime is 123004859. The reversal of 123004857 is 758400321.

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 123004857 - 2⁷ = 123004729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123004859) 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, 20500807 + ... + 20500812.

It is an arithmetic number, because the mean of its divisors is an integer number (41001620).

Almost surely, 2^123004857 is an apocalyptic number.

It is an amenable number.

123004857 is a deficient number, since it is larger than the sum of its proper divisors (41001623).

123004857 is an equidigital number, since it uses as much as digits as its factorization.

123004857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41001622.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 123004857 is about 11090.7554747186. The cubic root of 123004857 is about 497.3255292524.

The spelling of 123004857 in words is "one hundred twenty-three million, four thousand, eight hundred fifty-seven".