42771187 has 8 divisors (see below), whose sum is σ = 43822592. Its totient is φ = 41731200.

The previous prime is 42771163. The next prime is 42771193. The reversal of 42771187 is 78117724.

42771187 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42771187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42771587) 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 7 ways as a sum of consecutive naturals, for example, 4987 + ... + 10507.

It is an arithmetic number, because the mean of its divisors is an integer number (5477824).

Almost surely, 2^42771187 is an apocalyptic number.

42771187 is a deficient number, since it is larger than the sum of its proper divisors (1051405).

42771187 is a wasteful number, since it uses less digits than its factorization.

42771187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5709.

The product of its digits is 21952, while the sum is 37.

The square root of 42771187 is about 6539.9684250002. The cubic root of 42771187 is about 349.7172873465.

The spelling of 42771187 in words is "forty-two million, seven hundred seventy-one thousand, one hundred eighty-seven".