42771870 has 24 divisors (see below), whose sum is σ = 111207096. Its totient is φ = 11405808.

The previous prime is 42771857. The next prime is 42771913. The reversal of 42771870 is 7817724.

42771870 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 237532 + ... + 237711.

It is an arithmetic number, because the mean of its divisors is an integer number (4633629).

Almost surely, 2^42771870 is an apocalyptic number.

42771870 is an abundant number, since it is smaller than the sum of its proper divisors (68435226).

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

42771870 is a wasteful number, since it uses less digits than its factorization.

42771870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475256 (or 475253 counting only the distinct ones).

The product of its (nonzero) digits is 21952, while the sum is 36.

The square root of 42771870 is about 6540.0206421693. The cubic root of 42771870 is about 349.7191488460.

The spelling of 42771870 in words is "forty-two million, seven hundred seventy-one thousand, eight hundred seventy".