42888787 has 4 divisors (see below), whose sum is σ = 42906760. Its totient is φ = 42870816.

The previous prime is 42888751. The next prime is 42888793. The reversal of 42888787 is 78788824.

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 42888787 - 2¹⁵ = 42856019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42888737) 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, 4737 + ... + 10402.

It is an arithmetic number, because the mean of its divisors is an integer number (10726690).

Almost surely, 2^42888787 is an apocalyptic number.

42888787 is a deficient number, since it is larger than the sum of its proper divisors (17973).

42888787 is a wasteful number, since it uses less digits than its factorization.

42888787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17972.

The product of its digits is 1605632, while the sum is 52.

The square root of 42888787 is about 6548.9531224464. The cubic root of 42888787 is about 350.0375116258.

The spelling of 42888787 in words is "forty-two million, eight hundred eighty-eight thousand, seven hundred eighty-seven".