392242378 has 8 divisors (see below), whose sum is σ = 641851200. Its totient is φ = 178291980.

The previous prime is 392242373. The next prime is 392242379. The reversal of 392242378 is 873242293.

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

It is a self number, because there is not a number n which added to its sum of digits gives 392242378.

It is not an unprimeable number, because it can be changed into a prime (392242373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8914578 + ... + 8914621.

It is an arithmetic number, because the mean of its divisors is an integer number (80231400).

Almost surely, 2^392242378 is an apocalyptic number.

392242378 is a deficient number, since it is larger than the sum of its proper divisors (249608822).

392242378 is a wasteful number, since it uses less digits than its factorization.

392242378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17829212.

The product of its digits is 145152, while the sum is 40.

The square root of 392242378 is about 19805.1098961859. The cubic root of 392242378 is about 732.0119502463.

The spelling of 392242378 in words is "three hundred ninety-two million, two hundred forty-two thousand, three hundred seventy-eight".