394381042 has 16 divisors (see below), whose sum is σ = 659083392. Its totient is φ = 175449520.

The previous prime is 394380953. The next prime is 394381049. The reversal of 394381042 is 240183493.

It is a junction number, because it is equal to n+sod(n) for n = 394380989 and 394381007.

It is not an unprimeable number, because it can be changed into a prime (394381049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189673 + ... + 191740.

It is an arithmetic number, because the mean of its divisors is an integer number (41192712).

Almost surely, 2^394381042 is an apocalyptic number.

394381042 is a deficient number, since it is larger than the sum of its proper divisors (264702350).

394381042 is a wasteful number, since it uses less digits than its factorization.

394381042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381473.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 394381042 is about 19859.0292310576. The cubic root of 394381042 is about 733.3399479201.

The spelling of 394381042 in words is "three hundred ninety-four million, three hundred eighty-one thousand, forty-two".