42732871 has 4 divisors (see below), whose sum is σ = 43111152. Its totient is φ = 42354592.

The previous prime is 42732869. The next prime is 42732887. The reversal of 42732871 is 17823724.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42732871 - 2¹ = 42732869 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 (42732971) 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, 188971 + ... + 189196.

It is an arithmetic number, because the mean of its divisors is an integer number (10777788).

Almost surely, 2^42732871 is an apocalyptic number.

42732871 is a deficient number, since it is larger than the sum of its proper divisors (378281).

42732871 is a wasteful number, since it uses less digits than its factorization.

42732871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378280.

The product of its digits is 18816, while the sum is 34.

The square root of 42732871 is about 6537.0383967053. The cubic root of 42732871 is about 349.6128262840.

The spelling of 42732871 in words is "forty-two million, seven hundred thirty-two thousand, eight hundred seventy-one".