42771109 has 4 divisors (see below), whose sum is σ = 45022240. Its totient is φ = 40519980.

The previous prime is 42771097. The next prime is 42771121. The reversal of 42771109 is 90117724.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (42771097) and next prime (42771121).

It is a cyclic number.

It is not a de Polignac number, because 42771109 - 2¹¹ = 42769061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42771139) 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 3 ways as a sum of consecutive naturals, for example, 1125537 + ... + 1125574.

It is an arithmetic number, because the mean of its divisors is an integer number (11255560).

Almost surely, 2^42771109 is an apocalyptic number.

It is an amenable number.

42771109 is a deficient number, since it is larger than the sum of its proper divisors (2251131).

42771109 is a wasteful number, since it uses less digits than its factorization.

42771109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2251130.

The product of its (nonzero) digits is 3528, while the sum is 31.

The square root of 42771109 is about 6539.9624616660. The cubic root of 42771109 is about 349.7170747582.

The spelling of 42771109 in words is "forty-two million, seven hundred seventy-one thousand, one hundred nine".