42728959 has 16 divisors (see below), whose sum is σ = 53121600. Its totient is φ = 33465600.

The previous prime is 42728941. The next prime is 42728993. The reversal of 42728959 is 95982724.

It is a de Polignac number, because none of the positive numbers 2^k-42728959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42708959) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6867 + ... + 11515.

It is an arithmetic number, because the mean of its divisors is an integer number (3320100).

Almost surely, 2^42728959 is an apocalyptic number.

42728959 is a deficient number, since it is larger than the sum of its proper divisors (10392641).

42728959 is a wasteful number, since it uses less digits than its factorization.

42728959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4770.

The product of its digits is 362880, while the sum is 46.

The square root of 42728959 is about 6536.7391717889. The cubic root of 42728959 is about 349.6021574704.

It can be divided in two parts, 4272 and 8959, that added together give a palindrome (13231).

The spelling of 42728959 in words is "forty-two million, seven hundred twenty-eight thousand, nine hundred fifty-nine".