42540520005 has 40 divisors (see below), whose sum is σ = 77223168000. Its totient is φ = 22401067104.

The previous prime is 42540519997. The next prime is 42540520037. The reversal of 42540520005 is 50002504524.

It is not a de Polignac number, because 42540520005 - 2³ = 42540519997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 632805 + ... + 696794.

It is an arithmetic number, because the mean of its divisors is an integer number (1930579200).

Almost surely, 2^42540520005 is an apocalyptic number.

42540520005 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42540520005 is a deficient number, since it is larger than the sum of its proper divisors (34682647995).

42540520005 is a wasteful number, since it uses less digits than its factorization.

42540520005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1329695 (or 1329686 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 27.

The spelling of 42540520005 in words is "forty-two billion, five hundred forty million, five hundred twenty thousand, five".