42156195012 has 168 divisors, whose sum is σ = 116824526784. Its totient is φ = 13277411136.

The previous prime is 42156194987. The next prime is 42156195031. The reversal of 42156195012 is 21059165124.

42156195012 is a `hidden beast` number, since 4 + 2 + 1 + 561 + 95 + 0 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 5562858 + ... + 5570430.

It is an arithmetic number, because the mean of its divisors is an integer number (695384088).

Almost surely, 2^42156195012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42156195012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58412263392).

42156195012 is an abundant number, since it is smaller than the sum of its proper divisors (74668331772).

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

42156195012 is a wasteful number, since it uses less digits than its factorization.

42156195012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7701 (or 7684 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The spelling of 42156195012 in words is "forty-two billion, one hundred fifty-six million, one hundred ninety-five thousand, twelve".