42771147 has 16 divisors (see below), whose sum is σ = 60203520. Its totient is φ = 26935200.

The previous prime is 42771139. The next prime is 42771151. The reversal of 42771147 is 74117724.

It is not a de Polignac number, because 42771147 - 2³ = 42771139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42771247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23697 + ... + 25437.

It is an arithmetic number, because the mean of its divisors is an integer number (3762720).

Almost surely, 2^42771147 is an apocalyptic number.

42771147 is a deficient number, since it is larger than the sum of its proper divisors (17432373).

42771147 is a wasteful number, since it uses less digits than its factorization.

42771147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2194.

The product of its digits is 10976, while the sum is 33.

The square root of 42771147 is about 6539.9653668808. The cubic root of 42771147 is about 349.7171783269.

The spelling of 42771147 in words is "forty-two million, seven hundred seventy-one thousand, one hundred forty-seven".