42181431678 has 48 divisors (see below), whose sum is σ = 94694002416. Its totient is φ = 13559374080.

The previous prime is 42181431629. The next prime is 42181431697. The reversal of 42181431678 is 87613418124.

42181431678 is a `hidden beast` number, since 421 + 8 + 143 + 16 + 78 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 204988 + ... + 355503.

It is an arithmetic number, because the mean of its divisors is an integer number (1972791717).

Almost surely, 2^42181431678 is an apocalyptic number.

42181431678 is an abundant number, since it is smaller than the sum of its proper divisors (52512570738).

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

42181431678 is a wasteful number, since it uses less digits than its factorization.

42181431678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560649 (or 560646 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The spelling of 42181431678 in words is "forty-two billion, one hundred eighty-one million, four hundred thirty-one thousand, six hundred seventy-eight".