1042823 has 4 divisors (see below), whose sum is σ = 1044888. Its totient is φ = 1040760.

The previous prime is 1042819. The next prime is 1042829. The reversal of 1042823 is 3282401.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1042823 - 2² = 1042819 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 1042795 and 1042804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1042829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 293 + ... + 1473.

It is an arithmetic number, because the mean of its divisors is an integer number (261222).

2^1042823 is an apocalyptic number.

1042823 is a deficient number, since it is larger than the sum of its proper divisors (2065).

1042823 is an equidigital number, since it uses as much as digits as its factorization.

1042823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2064.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1042823 is about 1021.1870543637. The cubic root of 1042823 is about 101.4075290041.

The spelling of 1042823 in words is "one million, forty-two thousand, eight hundred twenty-three".