42877289 has 8 divisors (see below), whose sum is σ = 52772160. Its totient is φ = 33924816.

The previous prime is 42877277. The next prime is 42877291. The reversal of 42877289 is 98277824.

It is a happy number.

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 42877289 - 2²⁴ = 26100073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42877249) 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, 235499 + ... + 235680.

It is an arithmetic number, because the mean of its divisors is an integer number (6596520).

Almost surely, 2^42877289 is an apocalyptic number.

It is an amenable number.

42877289 is a deficient number, since it is larger than the sum of its proper divisors (9894871).

42877289 is a wasteful number, since it uses less digits than its factorization.

42877289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471199.

The product of its digits is 451584, while the sum is 47.

The square root of 42877289 is about 6548.0752133738. The cubic root of 42877289 is about 350.0062284606.

The spelling of 42877289 in words is "forty-two million, eight hundred seventy-seven thousand, two hundred eighty-nine".