842269 has 4 divisors (see below), whose sum is σ = 845244. Its totient is φ = 839296.

The previous prime is 842267. The next prime is 842279. The reversal of 842269 is 962248.

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

It can be written as a sum of positive squares in 2 ways, for example, as 260100 + 582169 = 510^2 + 763^2 .

It is a cyclic number.

It is not a de Polignac number, because 842269 - 2¹ = 842267 is a prime.

It is a super-2 number, since 2×842269² = 1418834136722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 842269.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842267) 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 3 ways as a sum of consecutive naturals, for example, 1012 + ... + 1645.

It is an arithmetic number, because the mean of its divisors is an integer number (211311).

2⁸⁴²²⁶⁹ is an apocalyptic number.

It is an amenable number.

842269 is a deficient number, since it is larger than the sum of its proper divisors (2975).

842269 is a wasteful number, since it uses less digits than its factorization.

842269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2974.

The product of its digits is 6912, while the sum is 31.

The square root of 842269 is about 917.7521451895. The cubic root of 842269 is about 94.4387591605.

It can be divided in two parts, 842 and 269, that added together give a palindrome (1111).

The spelling of 842269 in words is "eight hundred forty-two thousand, two hundred sixty-nine".