42505384042 has 48 divisors (see below), whose sum is σ = 73196719200. Its totient is φ = 18337266080.

The previous prime is 42505384027. The next prime is 42505384049. The reversal of 42505384042 is 24048350524.

It is a junction number, because it is equal to n+sod(n) for n = 42505383992 and 42505384010.

It is not an unprimeable number, because it can be changed into a prime (42505384049) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2211309 + ... + 2230447.

It is an arithmetic number, because the mean of its divisors is an integer number (1524931650).

Almost surely, 2^42505384042 is an apocalyptic number.

42505384042 is a deficient number, since it is larger than the sum of its proper divisors (30691335158).

42505384042 is a wasteful number, since it uses less digits than its factorization.

42505384042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19299 (or 19240 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 37.

The spelling of 42505384042 in words is "forty-two billion, five hundred five million, three hundred eighty-four thousand, forty-two".