347842 has 16 divisors (see below), whose sum is σ = 578592. Its totient is φ = 155520.

The previous prime is 347821. The next prime is 347849. The reversal of 347842 is 248743.

It is a d-powerful number, because it can be written as 3⁹ + 4⁸ + 8 + 7³ + 4⁹ + 2⁷ .

It is a self number, because there is not a number n which added to its sum of digits gives 347842.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (347849) by changing a digit.

347842 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 7 ways as a sum of consecutive naturals, for example, 2053 + ... + 2215.

It is an arithmetic number, because the mean of its divisors is an integer number (36162).

2³⁴⁷⁸⁴² is an apocalyptic number.

347842 is a deficient number, since it is larger than the sum of its proper divisors (230750).

347842 is a wasteful number, since it uses less digits than its factorization.

347842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273.

The product of its digits is 5376, while the sum is 28.

The square root of 347842 is about 589.7813154043. The cubic root of 347842 is about 70.3278498504.

Subtracting from 347842 its reverse (248743), we obtain a palindrome (99099).

The spelling of 347842 in words is "three hundred forty-seven thousand, eight hundred forty-two".