42884387 has 32 divisors (see below), whose sum is σ = 58867200. Its totient is φ = 30233088.

The previous prime is 42884381. The next prime is 42884389. The reversal of 42884387 is 78348824.

42884387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 42884387 - 2⁸ = 42884131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42884381) 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 31 ways as a sum of consecutive naturals, for example, 28664 + ... + 30122.

It is an arithmetic number, because the mean of its divisors is an integer number (1839600).

Almost surely, 2^42884387 is an apocalyptic number.

42884387 is a deficient number, since it is larger than the sum of its proper divisors (15982813).

42884387 is a wasteful number, since it uses less digits than its factorization.

42884387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1515.

The product of its digits is 344064, while the sum is 44.

The square root of 42884387 is about 6548.6171822760. The cubic root of 42884387 is about 350.0255409933.

The spelling of 42884387 in words is "forty-two million, eight hundred eighty-four thousand, three hundred eighty-seven".