42005135055 has 32 divisors (see below), whose sum is σ = 72806408640. Its totient is φ = 20679434880.

The previous prime is 42005135047. The next prime is 42005135071. The reversal of 42005135055 is 55053150024.

It is a happy number.

It is not a de Polignac number, because 42005135055 - 2³ = 42005135047 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 604356 + ... + 670265.

It is an arithmetic number, because the mean of its divisors is an integer number (2275200270).

Almost surely, 2^42005135055 is an apocalyptic number.

42005135055 is a deficient number, since it is larger than the sum of its proper divisors (30801273585).

42005135055 is a wasteful number, since it uses less digits than its factorization.

42005135055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1274668 (or 1274642 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 30.

Adding to 42005135055 its reverse (55053150024), we get a palindrome (97058285079).

The spelling of 42005135055 in words is "forty-two billion, five million, one hundred thirty-five thousand, fifty-five".