381342 has 16 divisors (see below), whose sum is σ = 821520. Its totient is φ = 117312.

The previous prime is 381323. The next prime is 381343. The reversal of 381342 is 243183.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381343) by changing a digit.

381342 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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, 2367 + ... + 2522.

It is an arithmetic number, because the mean of its divisors is an integer number (51345).

2³⁸¹³⁴² is an apocalyptic number.

381342 is an abundant number, since it is smaller than the sum of its proper divisors (440178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

381342 is a wasteful number, since it uses less digits than its factorization.

381342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4907.

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

The square root of 381342 is about 617.5289466900. The cubic root of 381342 is about 72.5167301858.

The spelling of 381342 in words is "three hundred eighty-one thousand, three hundred forty-two".