42858887 has 4 divisors (see below), whose sum is σ = 45380016. Its totient is φ = 40337760.

The previous prime is 42858883. The next prime is 42858901. The reversal of 42858887 is 78885824.

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 42858887 - 2² = 42858883 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42858883) 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, 1260539 + ... + 1260572.

It is an arithmetic number, because the mean of its divisors is an integer number (11345004).

Almost surely, 2^42858887 is an apocalyptic number.

42858887 is a deficient number, since it is larger than the sum of its proper divisors (2521129).

42858887 is a wasteful number, since it uses less digits than its factorization.

42858887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2521128.

The product of its digits is 1146880, while the sum is 50.

The square root of 42858887 is about 6546.6699168356. The cubic root of 42858887 is about 349.9561496084.

The spelling of 42858887 in words is "forty-two million, eight hundred fifty-eight thousand, eight hundred eighty-seven".