842667 has 8 divisors (see below), whose sum is σ = 1284096. Its totient is φ = 481512.

The previous prime is 842657. The next prime is 842701. The reversal of 842667 is 766248.

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

It is not a de Polignac number, because 842667 - 2¹² = 838571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (842617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20043 + ... + 20084.

It is an arithmetic number, because the mean of its divisors is an integer number (160512).

2⁸⁴²⁶⁶⁷ is an apocalyptic number.

842667 is a deficient number, since it is larger than the sum of its proper divisors (441429).

842667 is a wasteful number, since it uses less digits than its factorization.

842667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40137.

The product of its digits is 16128, while the sum is 33.

The square root of 842667 is about 917.9689537234. The cubic root of 842667 is about 94.4536319654.

The spelling of 842667 in words is "eight hundred forty-two thousand, six hundred sixty-seven".