394742 has 4 divisors (see below), whose sum is σ = 592116. Its totient is φ = 197370.

The previous prime is 394739. The next prime is 394747. The reversal of 394742 is 247493.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 247493 = 37 ⋅6689.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98684 + ... + 98687.

It is an arithmetic number, because the mean of its divisors is an integer number (148029).

2³⁹⁴⁷⁴² is an apocalyptic number.

394742 is a deficient number, since it is larger than the sum of its proper divisors (197374).

394742 is a wasteful number, since it uses less digits than its factorization.

394742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197373.

The product of its digits is 6048, while the sum is 29.

The square root of 394742 is about 628.2849671924. The cubic root of 394742 is about 73.3563609960.

The spelling of 394742 in words is "three hundred ninety-four thousand, seven hundred forty-two".