1023843 has 4 divisors (see below), whose sum is σ = 1365128. Its totient is φ = 682560.

The previous prime is 1023839. The next prime is 1023851. The reversal of 1023843 is 3483201.

It is a happy number.

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

It is not a de Polignac number, because 1023843 - 2² = 1023839 is a prime.

It is a D-number.

It is a Duffinian number.

1023843 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1023833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170638 + ... + 170643.

It is an arithmetic number, because the mean of its divisors is an integer number (341282).

2^1023843 is an apocalyptic number.

1023843 is a deficient number, since it is larger than the sum of its proper divisors (341285).

1023843 is an equidigital number, since it uses as much as digits as its factorization.

1023843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341284.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1023843 is about 1011.8512736564. The cubic root of 1023843 is about 100.7885324886.

The spelling of 1023843 in words is "one million, twenty-three thousand, eight hundred forty-three".