842023 has 16 divisors (see below), whose sum is σ = 1093120. Its totient is φ = 629856.

The previous prime is 842021. The next prime is 842041. The reversal of 842023 is 320248.

It is a happy number.

It is a 5-Lehmer number, since φ(842023) divides (842023-1)⁵.

It is a cyclic number.

It is not a de Polignac number, because 842023 - 2¹ = 842021 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842021) 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 in 15 ways as a sum of consecutive naturals, for example, 1486 + ... + 1972.

It is an arithmetic number, because the mean of its divisors is an integer number (68320).

2⁸⁴²⁰²³ is an apocalyptic number.

842023 is a deficient number, since it is larger than the sum of its proper divisors (251097).

842023 is a wasteful number, since it uses less digits than its factorization.

842023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 842023 is about 917.6181122885. The cubic root of 842023 is about 94.4295640788.

The spelling of 842023 in words is "eight hundred forty-two thousand, twenty-three".