398342 has 16 divisors (see below), whose sum is σ = 702240. Its totient is φ = 165888.

The previous prime is 398341. The next prime is 398347. The reversal of 398342 is 243893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398341) 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, 134 + ... + 902.

It is an arithmetic number, because the mean of its divisors is an integer number (43890).

2³⁹⁸³⁴² is an apocalyptic number.

398342 is a deficient number, since it is larger than the sum of its proper divisors (303898).

398342 is a wasteful number, since it uses less digits than its factorization.

398342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815.

The product of its digits is 5184, while the sum is 29.

The square root of 398342 is about 631.1434068419. The cubic root of 398342 is about 73.5786869211.

Subtracting from 398342 its reverse (243893), we obtain a square (154449 = 393²).

The spelling of 398342 in words is "three hundred ninety-eight thousand, three hundred forty-two".