842493 has 8 divisors (see below), whose sum is σ = 1139008. Its totient is φ = 553824.

The previous prime is 842489. The next prime is 842497. The reversal of 842493 is 394248.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (842489) and next prime (842497).

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

It is not a de Polignac number, because 842493 - 2² = 842489 is a prime.

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 842493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842497) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1705 + ... + 2142.

It is an arithmetic number, because the mean of its divisors is an integer number (142376).

2⁸⁴²⁴⁹³ is an apocalyptic number.

It is an amenable number.

842493 is a deficient number, since it is larger than the sum of its proper divisors (296515).

842493 is a wasteful number, since it uses less digits than its factorization.

842493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3923.

The product of its digits is 6912, while the sum is 30.

The square root of 842493 is about 917.8741743834. The cubic root of 842493 is about 94.4471303606.

The spelling of 842493 in words is "eight hundred forty-two thousand, four hundred ninety-three".