42389785040 has 40 divisors (see below), whose sum is σ = 100653200640. Its totient is φ = 16595148416.

The previous prime is 42389785037. The next prime is 42389785043. The reversal of 42389785040 is 4058798324.

It is an interprime number because it is at equal distance from previous prime (42389785037) and next prime (42389785043).

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 42389785040.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42389785043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5633180 + ... + 5640699.

It is an arithmetic number, because the mean of its divisors is an integer number (2516330016).

Almost surely, 2^42389785040 is an apocalyptic number.

42389785040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42389785040 is an abundant number, since it is smaller than the sum of its proper divisors (58263415600).

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

42389785040 is a wasteful number, since it uses less digits than its factorization.

42389785040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11273939 (or 11273933 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 50.

The spelling of 42389785040 in words is "forty-two billion, three hundred eighty-nine million, seven hundred eighty-five thousand, forty".