2857123 has 2 divisors, whose sum is σ = 2857124. Its totient is φ = 2857122.

The previous prime is 2857097. The next prime is 2857159. The reversal of 2857123 is 3217582.

2857123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2857123 - 2¹⁷ = 2726051 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2857091 and 2857100.

It is not a weakly prime, because it can be changed into another prime (2857223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1428561 + 1428562.

It is an arithmetic number, because the mean of its divisors is an integer number (1428562).

2^2857123 is an apocalyptic number.

2857123 is a deficient number, since it is larger than the sum of its proper divisors (1).

2857123 is an equidigital number, since it uses as much as digits as its factorization.

2857123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3360, while the sum is 28.

The square root of 2857123 is about 1690.3026356248. The cubic root of 2857123 is about 141.8980124651.

The spelling of 2857123 in words is "two million, eight hundred fifty-seven thousand, one hundred twenty-three".