394205473634542 has 8 divisors (see below), whose sum is σ = 591349990202496. Its totient is φ = 197088810233712.

The previous prime is 394205473634417. The next prime is 394205473634549. The reversal of 394205473634542 is 245436374502493.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394205473634549) 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, 6963256398 + ... + 6963313009.

It is an arithmetic number, because the mean of its divisors is an integer number (73918748775312).

Almost surely, 2^{394205473634542} is an apocalyptic number.

394205473634542 is a deficient number, since it is larger than the sum of its proper divisors (197144516567954).

394205473634542 is a wasteful number, since it uses less digits than its factorization.

394205473634542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13926583562.

The product of its (nonzero) digits is 261273600, while the sum is 61.

The spelling of 394205473634542 in words is "three hundred ninety-four trillion, two hundred five billion, four hundred seventy-three million, six hundred thirty-four thousand, five hundred forty-two".