42091072372 has 12 divisors (see below), whose sum is σ = 73933205220. Its totient is φ = 20967299456.

The previous prime is 42091072367. The next prime is 42091072379. The reversal of 42091072372 is 27327019024.

It can be written as a sum of positive squares in 2 ways, for example, as 4141694736 + 37949377636 = 64356^2 + 194806^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42091072379) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 19557973 + ... + 19560124.

It is an arithmetic number, because the mean of its divisors is an integer number (6161100435).

Almost surely, 2^42091072372 is an apocalyptic number.

It is an amenable number.

42091072372 is a deficient number, since it is larger than the sum of its proper divisors (31842132848).

42091072372 is a wasteful number, since it uses less digits than its factorization.

42091072372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39118370 (or 39118368 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 37.

The spelling of 42091072372 in words is "forty-two billion, ninety-one million, seventy-two thousand, three hundred seventy-two".