391196242 has 8 divisors (see below), whose sum is σ = 587317500. Its totient is φ = 195423744.

The previous prime is 391196237. The next prime is 391196243. The reversal of 391196242 is 242691193.

It can be written as a sum of positive squares in 2 ways, for example, as 389233441 + 1962801 = 19729^2 + 1401^2 .

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

It is not an unprimeable number, because it can be changed into a prime (391196243) 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, 84367 + ... + 88882.

Almost surely, 2^391196242 is an apocalyptic number.

391196242 is a deficient number, since it is larger than the sum of its proper divisors (196121258).

391196242 is a wasteful number, since it uses less digits than its factorization.

391196242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174380.

The product of its digits is 23328, while the sum is 37.

The square root of 391196242 is about 19778.6815030729. The cubic root of 391196242 is about 731.3605962998.

The spelling of 391196242 in words is "three hundred ninety-one million, one hundred ninety-six thousand, two hundred forty-two".