42505384040 has 64 divisors (see below), whose sum is σ = 109416389760. Its totient is φ = 14557697280.

The previous prime is 42505384027. The next prime is 42505384049. The reversal of 42505384040 is 4048350524.

It is a Harshad number since it is a multiple of its sum of digits (35).

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 15 ways as a sum of consecutive naturals, for example, 182819 + ... + 344141.

It is an arithmetic number, because the mean of its divisors is an integer number (1709631090).

Almost surely, 2^42505384040 is an apocalyptic number.

42505384040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42505384040 is an abundant number, since it is smaller than the sum of its proper divisors (66911005720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42505384040 is a wasteful number, since it uses less digits than its factorization.

42505384040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162282 (or 162278 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 35.

The spelling of 42505384040 in words is "forty-two billion, five hundred five million, three hundred eighty-four thousand, forty".