42889143 has 16 divisors (see below), whose sum is σ = 62496000. Its totient is φ = 25946880.

The previous prime is 42889129. The next prime is 42889159. The reversal of 42889143 is 34198824.

It is not a de Polignac number, because 42889143 - 2¹² = 42885047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42869143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29958 + ... + 31356.

It is an arithmetic number, because the mean of its divisors is an integer number (3906000).

Almost surely, 2^42889143 is an apocalyptic number.

42889143 is a deficient number, since it is larger than the sum of its proper divisors (19606857).

42889143 is a wasteful number, since it uses less digits than its factorization.

42889143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2342.

The product of its digits is 55296, while the sum is 39.

The square root of 42889143 is about 6548.9803023066. The cubic root of 42889143 is about 350.0384801230.

It can be divided in two parts, 4288 and 9143, that added together give a palindrome (13431).

The spelling of 42889143 in words is "forty-two million, eight hundred eighty-nine thousand, one hundred forty-three".