42181039992 has 128 divisors (see below), whose sum is σ = 132549580800. Its totient is φ = 10887948288.

The previous prime is 42181039981. The next prime is 42181039993. The reversal of 42181039992 is 29993018124.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42181039993) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 102817 + ... + 308112.

It is an arithmetic number, because the mean of its divisors is an integer number (1035543600).

Almost surely, 2^42181039992 is an apocalyptic number.

42181039992 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

42181039992 is an abundant number, since it is smaller than the sum of its proper divisors (90368540808).

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

42181039992 is a wasteful number, since it uses less digits than its factorization.

42181039992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411005 (or 411001 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 48.

The spelling of 42181039992 in words is "forty-two billion, one hundred eighty-one million, thirty-nine thousand, nine hundred ninety-two".