42705208 has 32 divisors (see below), whose sum is σ = 98552160. Its totient is φ = 16894080.

The previous prime is 42705193. The next prime is 42705209. The reversal of 42705208 is 80250724.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42705209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28603 + ... + 30058.

It is an arithmetic number, because the mean of its divisors is an integer number (3079755).

Almost surely, 2^42705208 is an apocalyptic number.

It is an amenable number.

42705208 is an abundant number, since it is smaller than the sum of its proper divisors (55846952).

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

42705208 is a wasteful number, since it uses less digits than its factorization.

42705208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58687 (or 58683 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 42705208 is about 6534.9221877540. The cubic root of 42705208 is about 349.5373697167.

The spelling of 42705208 in words is "forty-two million, seven hundred five thousand, two hundred eight".