842031 has 6 divisors (see below), whose sum is σ = 1216280. Its totient is φ = 561348.

The previous prime is 842021. The next prime is 842041. The reversal of 842031 is 130248.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (842021) and next prime (842041).

It is not a de Polignac number, because 842031 - 2¹³ = 833839 is a prime.

It is a super-2 number, since 2×842031² = 1418032409922, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

842031 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 841995 and 842013.

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 polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 46771 + ... + 46788.

2⁸⁴²⁰³¹ is an apocalyptic number.

842031 is a deficient number, since it is larger than the sum of its proper divisors (374249).

842031 is a wasteful number, since it uses less digits than its factorization.

842031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93565 (or 93562 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 842031 is about 917.6224713901. The cubic root of 842031 is about 94.4298631340.

Adding to 842031 its reverse (130248), we get a palindrome (972279).

The spelling of 842031 in words is "eight hundred forty-two thousand, thirty-one".