42529889 has 4 divisors (see below), whose sum is σ = 42562500. Its totient is φ = 42497280.

The previous prime is 42529843. The next prime is 42529901. The reversal of 42529889 is 98892524.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16875664 + 25654225 = 4108^2 + 5065^2 .

It is a cyclic number.

It is not a de Polignac number, because 42529889 - 2¹² = 42525793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42529589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14264 + ... + 16985.

It is an arithmetic number, because the mean of its divisors is an integer number (10640625).

Almost surely, 2^42529889 is an apocalyptic number.

It is an amenable number.

42529889 is a deficient number, since it is larger than the sum of its proper divisors (32611).

42529889 is a wasteful number, since it uses less digits than its factorization.

42529889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32610.

The product of its digits is 414720, while the sum is 47.

The square root of 42529889 is about 6521.4943839583. The cubic root of 42529889 is about 349.0583915019.

It can be divided in two parts, 4252 and 9889, that added together give a palindrome (14141).

The spelling of 42529889 in words is "forty-two million, five hundred twenty-nine thousand, eight hundred eighty-nine".