800123 has 2 divisors, whose sum is σ = 800124. Its totient is φ = 800122.

The previous prime is 800119. The next prime is 800131. The reversal of 800123 is 321008.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 800123 - 2² = 800119 is a prime.

800123 is a modest number, since divided by 123 gives 8 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 800098 and 800107.

It is not a weakly prime, because it can be changed into another prime (800113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400061 + 400062.

It is an arithmetic number, because the mean of its divisors is an integer number (400062).

2⁸⁰⁰¹²³ is an apocalyptic number.

800123 is a deficient number, since it is larger than the sum of its proper divisors (1).

800123 is an equidigital number, since it uses as much as digits as its factorization.

800123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 800123 is about 894.4959474475. The cubic root of 800123 is about 92.8365340570.

The spelling of 800123 in words is "eight hundred thousand, one hundred twenty-three".