42542335561 has 8 divisors (see below), whose sum is σ = 47664140544. Its totient is φ = 37629583920.

The previous prime is 42542335553. The next prime is 42542335571. The reversal of 42542335561 is 16553324524.

42542335561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42542335561 - 2³ = 42542335553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42542335571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52262905 + ... + 52263718.

It is an arithmetic number, because the mean of its divisors is an integer number (5958017568).

Almost surely, 2^42542335561 is an apocalyptic number.

It is an amenable number.

42542335561 is a deficient number, since it is larger than the sum of its proper divisors (5121804983).

42542335561 is a wasteful number, since it uses less digits than its factorization.

42542335561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104526671.

The product of its digits is 432000, while the sum is 40.

The spelling of 42542335561 in words is "forty-two billion, five hundred forty-two million, three hundred thirty-five thousand, five hundred sixty-one".