42978007234872 has 96 divisors (see below), whose sum is σ = 121013892308400. Its totient is φ = 14289916506624.

The previous prime is 42978007234849. The next prime is 42978007234879. The reversal of 42978007234872 is 27843270087924.

It is a happy number.

42978007234872 is a `hidden beast` number, since 4 + 2 + 9 + 7 + 80 + 0 + 72 + 3 + 487 + 2 = 666.

42978007234872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42978007234879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27072097 + ... + 28615632.

Almost surely, 2^{42978007234872} is an apocalyptic number.

It is an amenable number.

42978007234872 is an abundant number, since it is smaller than the sum of its proper divisors (78035885073528).

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

42978007234872 is a wasteful number, since it uses less digits than its factorization.

42978007234872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55688147 (or 55688131 counting only the distinct ones).

The product of its (nonzero) digits is 75866112, while the sum is 63.

The spelling of 42978007234872 in words is "forty-two trillion, nine hundred seventy-eight billion, seven million, two hundred thirty-four thousand, eight hundred seventy-two".