42805982 has 8 divisors (see below), whose sum is σ = 64777536. Its totient is φ = 21213472.

The previous prime is 42805979. The next prime is 42805991. The reversal of 42805982 is 28950824.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94478 + ... + 94929.

It is an arithmetic number, because the mean of its divisors is an integer number (8097192).

Almost surely, 2^42805982 is an apocalyptic number.

42805982 is a deficient number, since it is larger than the sum of its proper divisors (21971554).

42805982 is a wasteful number, since it uses less digits than its factorization.

42805982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189522.

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 42805982 is about 6542.6280652349. The cubic root of 42805982 is about 349.8120950557.

The spelling of 42805982 in words is "forty-two million, eight hundred five thousand, nine hundred eighty-two".