394042 has 8 divisors (see below), whose sum is σ = 644832. Its totient is φ = 179100.

The previous prime is 394039. The next prime is 394049. The reversal of 394042 is 240493.

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

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 17911 = 394042 / (3 + 9 + 4 + 0 + 4 + 2).

It is a d-powerful number, because it can be written as 3⁶ + 9² + 0 + 4² + 4⁹ + 2¹⁷ .

It is not an unprimeable number, because it can be changed into a prime (394049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8934 + ... + 8977.

It is an arithmetic number, because the mean of its divisors is an integer number (80604).

2³⁹⁴⁰⁴² is an apocalyptic number.

394042 is a deficient number, since it is larger than the sum of its proper divisors (250790).

394042 is a wasteful number, since it uses less digits than its factorization.

394042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17924.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 394042 is about 627.7276479493. The cubic root of 394042 is about 73.3129741463.

The spelling of 394042 in words is "three hundred ninety-four thousand, forty-two".