842131 has 8 divisors (see below), whose sum is σ = 885600. Its totient is φ = 799680.

The previous prime is 842113. The next prime is 842141. The reversal of 842131 is 131248.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 842131 - 2⁷ = 842003 is a prime.

It is a super-2 number, since 2×842131² = 1418369242322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 842099 and 842108.

It is not an unprimeable number, because it can be changed into a prime (842111) 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 7 ways as a sum of consecutive naturals, for example, 1855 + ... + 2263.

It is an arithmetic number, because the mean of its divisors is an integer number (110700).

2⁸⁴²¹³¹ is an apocalyptic number.

842131 is a deficient number, since it is larger than the sum of its proper divisors (43469).

842131 is a wasteful number, since it uses less digits than its factorization.

842131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509.

The product of its digits is 192, while the sum is 19.

The square root of 842131 is about 917.6769584118. The cubic root of 842131 is about 94.4336011644.

Adding to 842131 its reverse (131248), we get a palindrome (973379).

The spelling of 842131 in words is "eight hundred forty-two thousand, one hundred thirty-one".