842398 has 8 divisors (see below), whose sum is σ = 1318608. Its totient is φ = 402864.

The previous prime is 842393. The next prime is 842399. The reversal of 842398 is 893248.

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

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842393) by changing a digit.

842398 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9111 + ... + 9202.

It is an arithmetic number, because the mean of its divisors is an integer number (164826).

2⁸⁴²³⁹⁸ is an apocalyptic number.

842398 is a deficient number, since it is larger than the sum of its proper divisors (476210).

842398 is a wasteful number, since it uses less digits than its factorization.

842398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18338.

The product of its digits is 13824, while the sum is 34.

The square root of 842398 is about 917.8224229120. The cubic root of 842398 is about 94.4435802561.

The spelling of 842398 in words is "eight hundred forty-two thousand, three hundred ninety-eight".