42065580 has 48 divisors (see below), whose sum is σ = 118589184. Its totient is φ = 11140800.

The previous prime is 42065561. The next prime is 42065581. The reversal of 42065580 is 8556024.

42065580 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (42065581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6739 + ... + 11381.

It is an arithmetic number, because the mean of its divisors is an integer number (2470608).

Almost surely, 2^42065580 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42065580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59294592).

42065580 is an abundant number, since it is smaller than the sum of its proper divisors (76523604).

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

42065580 is a wasteful number, since it uses less digits than its factorization.

42065580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4806 (or 4804 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 42065580 is about 6485.7983317399. The cubic root of 42065580 is about 347.7834893169.

The spelling of 42065580 in words is "forty-two million, sixty-five thousand, five hundred eighty".