42887329 has 8 divisors (see below), whose sum is σ = 44146728. Its totient is φ = 41633280.

The previous prime is 42887321. The next prime is 42887363. The reversal of 42887329 is 92378824.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4161600 + 38725729 = 2040^2 + 6223^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 42887329 - 2³ = 42887321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42887321) 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, 19569 + ... + 21649.

It is an arithmetic number, because the mean of its divisors is an integer number (5518341).

Almost surely, 2^42887329 is an apocalyptic number.

It is an amenable number.

42887329 is a deficient number, since it is larger than the sum of its proper divisors (1259399).

42887329 is a wasteful number, since it uses less digits than its factorization.

42887329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2675.

The product of its digits is 193536, while the sum is 43.

The square root of 42887329 is about 6548.8418059990. The cubic root of 42887329 is about 350.0335450842.

The spelling of 42887329 in words is "forty-two million, eight hundred eighty-seven thousand, three hundred twenty-nine".