42542236305 has 24 divisors (see below), whose sum is σ = 73932438528. Its totient is φ = 22629942816.

The previous prime is 42542236267. The next prime is 42542236357. The reversal of 42542236305 is 50363224524.

42542236305 is a `hidden beast` number, since 425 + 4 + 223 + 6 + 3 + 0 + 5 = 666.

42542236305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42542236305 - 2¹² = 42542232209 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 42542236305.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1216947 + ... + 1251416.

It is an arithmetic number, because the mean of its divisors is an integer number (3080518272).

Almost surely, 2^42542236305 is an apocalyptic number.

42542236305 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42542236305 is a deficient number, since it is larger than the sum of its proper divisors (31390202223).

42542236305 is a wasteful number, since it uses less digits than its factorization.

42542236305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2468757 (or 2468754 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 36.

The spelling of 42542236305 in words is "forty-two billion, five hundred forty-two million, two hundred thirty-six thousand, three hundred five".