42882391 has 4 divisors (see below), whose sum is σ = 42898000. Its totient is φ = 42866784.

The previous prime is 42882379. The next prime is 42882397. The reversal of 42882391 is 19328824.

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 42882391 - 2⁷ = 42882263 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42882391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42882397) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2466 + ... + 9583.

It is an arithmetic number, because the mean of its divisors is an integer number (10724500).

Almost surely, 2^42882391 is an apocalyptic number.

42882391 is a deficient number, since it is larger than the sum of its proper divisors (15609).

42882391 is a wasteful number, since it uses less digits than its factorization.

42882391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15608.

The product of its digits is 27648, while the sum is 37.

The square root of 42882391 is about 6548.4647819164. The cubic root of 42882391 is about 350.0201104091.

The spelling of 42882391 in words is "forty-two million, eight hundred eighty-two thousand, three hundred ninety-one".