42805470 has 32 divisors (see below), whose sum is σ = 103279392. Its totient is φ = 11354112.

The previous prime is 42805447. The next prime is 42805471. The reversal of 42805470 is 7450824.

42805470 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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42805471) 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, 2094 + ... + 9486.

It is an arithmetic number, because the mean of its divisors is an integer number (3227481).

Almost surely, 2^42805470 is an apocalyptic number.

42805470 is an abundant number, since it is smaller than the sum of its proper divisors (60473922).

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

42805470 is a wasteful number, since it uses less digits than its factorization.

42805470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7596.

The product of its (nonzero) digits is 8960, while the sum is 30.

The square root of 42805470 is about 6542.5889371104. The cubic root of 42805470 is about 349.8107003557.

The spelling of 42805470 in words is "forty-two million, eight hundred five thousand, four hundred seventy".