342381 has 8 divisors (see below), whose sum is σ = 491680. Its totient is φ = 210672.

The previous prime is 342379. The next prime is 342389. The reversal of 342381 is 183243.

It is a happy number.

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

It is not a de Polignac number, because 342381 - 2¹ = 342379 is a prime.

It is a super-2 number, since 2×342381² = 234449498322, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 8.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 342381.

It is not an unprimeable number, because it can be changed into a prime (342389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4351 + ... + 4428.

It is an arithmetic number, because the mean of its divisors is an integer number (61460).

2³⁴²³⁸¹ is an apocalyptic number.

It is an amenable number.

342381 is a deficient number, since it is larger than the sum of its proper divisors (149299).

342381 is a wasteful number, since it uses less digits than its factorization.

342381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8795.

The product of its digits is 576, while the sum is 21.

The square root of 342381 is about 585.1333181421. The cubic root of 342381 is about 69.9578658003.

It can be divided in two parts, 34 and 2381, that added together give a triangular number (2415 = T₆₉).

The spelling of 342381 in words is "three hundred forty-two thousand, three hundred eighty-one".