42736871 has 4 divisors (see below), whose sum is σ = 44986200. Its totient is φ = 40487544.

The previous prime is 42736849. The next prime is 42736873. The reversal of 42736871 is 17863724.

42736871 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42736871 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 (42736873) 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 3 ways as a sum of consecutive naturals, for example, 1124636 + ... + 1124673.

It is an arithmetic number, because the mean of its divisors is an integer number (11246550).

Almost surely, 2^42736871 is an apocalyptic number.

42736871 is a deficient number, since it is larger than the sum of its proper divisors (2249329).

42736871 is a wasteful number, since it uses less digits than its factorization.

42736871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2249328.

The product of its digits is 56448, while the sum is 38.

The square root of 42736871 is about 6537.3443384910. The cubic root of 42736871 is about 349.6237344182.

The spelling of 42736871 in words is "forty-two million, seven hundred thirty-six thousand, eight hundred seventy-one".