42873729 has 8 divisors (see below), whose sum is σ = 58381440. Its totient is φ = 27974256.

The previous prime is 42873689. The next prime is 42873731. The reversal of 42873729 is 92737824.

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

It is not a de Polignac number, because 42873729 - 2⁷ = 42873601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42873749) 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 7 ways as a sum of consecutive naturals, for example, 151894 + ... + 152175.

It is an arithmetic number, because the mean of its divisors is an integer number (7297680).

Almost surely, 2^42873729 is an apocalyptic number.

It is an amenable number.

42873729 is a deficient number, since it is larger than the sum of its proper divisors (15507711).

42873729 is a wasteful number, since it uses less digits than its factorization.

42873729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304119.

The product of its digits is 169344, while the sum is 42.

The square root of 42873729 is about 6547.8033721241. The cubic root of 42873729 is about 349.9965414624.

The spelling of 42873729 in words is "forty-two million, eight hundred seventy-three thousand, seven hundred twenty-nine".