42878555808442 has 16 divisors (see below), whose sum is σ = 64350491121792. Its totient is φ = 21428392583520.

The previous prime is 42878555808379. The next prime is 42878555808449. The reversal of 42878555808442 is 24480855587824.

It is not an unprimeable number, because it can be changed into a prime (42878555808449) 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, 235491217 + ... + 235673227.

It is an arithmetic number, because the mean of its divisors is an integer number (4021905695112).

Almost surely, 2^{42878555808442} is an apocalyptic number.

42878555808442 is a deficient number, since it is larger than the sum of its proper divisors (21471935313350).

42878555808442 is a wasteful number, since it uses less digits than its factorization.

42878555808442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241173.

The product of its (nonzero) digits is 917504000, while the sum is 70.

The spelling of 42878555808442 in words is "forty-two trillion, eight hundred seventy-eight billion, five hundred fifty-five million, eight hundred eight thousand, four hundred forty-two".