347372842 has 4 divisors (see below), whose sum is σ = 521059266. Its totient is φ = 173686420.

The previous prime is 347372819. The next prime is 347372867. The reversal of 347372842 is 248273743.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 300710281 + 46662561 = 17341^2 + 6831^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 347372795 and 347372804.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86843209 + ... + 86843212.

Almost surely, 2^347372842 is an apocalyptic number.

347372842 is a deficient number, since it is larger than the sum of its proper divisors (173686424).

347372842 is a wasteful number, since it uses less digits than its factorization.

347372842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173686423.

The product of its digits is 225792, while the sum is 40.

The square root of 347372842 is about 18637.9409270445. The cubic root of 347372842 is about 702.9621698390.

Subtracting from 347372842 its reverse (248273743), we obtain a palindrome (99099099).

The spelling of 347372842 in words is "three hundred forty-seven million, three hundred seventy-two thousand, eight hundred forty-two".