42542541632 has 14 divisors (see below), whose sum is σ = 84420356178. Its totient is φ = 21271270784.

The previous prime is 42542541631. The next prime is 42542541683. The reversal of 42542541632 is 23614524524.

It can be written as a sum of positive squares in only one way, i.e., 42459075136 + 83466496 = 206056^2 + 9136^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42542541631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332363543 + ... + 332363670.

Almost surely, 2^42542541632 is an apocalyptic number.

It is an amenable number.

42542541632 is a deficient number, since it is larger than the sum of its proper divisors (41877814546).

42542541632 is an equidigital number, since it uses as much as digits as its factorization.

42542541632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664727225 (or 664727215 counting only the distinct ones).

The product of its digits is 230400, while the sum is 38.

The spelling of 42542541632 in words is "forty-two billion, five hundred forty-two million, five hundred forty-one thousand, six hundred thirty-two".