394257122132 has 24 divisors (see below), whose sum is σ = 693695935296. Its totient is φ = 196060055168.

The previous prime is 394257122101. The next prime is 394257122137. The reversal of 394257122132 is 231221752493.

It is a self number, because there is not a number n which added to its sum of digits gives 394257122132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394257122137) 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, 671708 + ... + 1113420.

It is an arithmetic number, because the mean of its divisors is an integer number (28903997304).

Almost surely, 2^394257122132 is an apocalyptic number.

It is an amenable number.

394257122132 is a deficient number, since it is larger than the sum of its proper divisors (299438813164).

394257122132 is a wasteful number, since it uses less digits than its factorization.

394257122132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442927 (or 442925 counting only the distinct ones).

The product of its digits is 181440, while the sum is 41.

The spelling of 394257122132 in words is "three hundred ninety-four billion, two hundred fifty-seven million, one hundred twenty-two thousand, one hundred thirty-two".