6378215442 has 16 divisors (see below), whose sum is σ = 12873463680. Its totient is φ = 2106566352.

The previous prime is 6378215419. The next prime is 6378215443. The reversal of 6378215442 is 2445128736.

It is a junction number, because it is equal to n+sod(n) for n = 6378215394 and 6378215403.

It is not an unprimeable number, because it can be changed into a prime (6378215443) 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, 4875658 + ... + 4876965.

It is an arithmetic number, because the mean of its divisors is an integer number (804591480).

Almost surely, 2^6378215442 is an apocalyptic number.

6378215442 is an abundant number, since it is smaller than the sum of its proper divisors (6495248238).

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

6378215442 is a wasteful number, since it uses less digits than its factorization.

6378215442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9752737.

The product of its digits is 322560, while the sum is 42.

The square root of 6378215442 is about 79863.7304538174. The cubic root of 6378215442 is about 1854.5265770932.

The spelling of 6378215442 in words is "six billion, three hundred seventy-eight million, two hundred fifteen thousand, four hundred forty-two".