378439847442 has 40 divisors (see below), whose sum is σ = 850121712396. Its totient is φ = 125828844768.

The previous prime is 378439847431. The next prime is 378439847447. The reversal of 378439847442 is 244748934873.

378439847442 is a `hidden beast` number, since 3 + 7 + 84 + 39 + 84 + 7 + 442 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 377867154681 + 572692761 = 614709^2 + 23931^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 378439847442.

It is not an unprimeable number, because it can be changed into a prime (378439847447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2877813 + ... + 3006440.

Almost surely, 2^378439847442 is an apocalyptic number.

378439847442 is an abundant number, since it is smaller than the sum of its proper divisors (471681864954).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

378439847442 is a wasteful number, since it uses less digits than its factorization.

378439847442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5884664 (or 5884655 counting only the distinct ones).

The product of its digits is 130056192, while the sum is 63.

The spelling of 378439847442 in words is "three hundred seventy-eight billion, four hundred thirty-nine million, eight hundred forty-seven thousand, four hundred forty-two".