42643204 has 12 divisors (see below), whose sum is σ = 75127500. Its totient is φ = 21178208.

The previous prime is 42643189. The next prime is 42643207. The reversal of 42643204 is 40234624.

It can be written as a sum of positive squares in 2 ways, for example, as 4796100 + 37847104 = 2190^2 + 6152^2 .

It is not an unprimeable number, because it can be changed into a prime (42643207) 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, 35179 + ... + 36370.

It is an arithmetic number, because the mean of its divisors is an integer number (6260625).

Almost surely, 2^42643204 is an apocalyptic number.

It is an amenable number.

42643204 is a deficient number, since it is larger than the sum of its proper divisors (32484296).

42643204 is a wasteful number, since it uses less digits than its factorization.

42643204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71702 (or 71700 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 42643204 is about 6530.1764141561. The cubic root of 42643204 is about 349.3681225025.

Adding to 42643204 its reverse (40234624), we get a palindrome (82877828).

The spelling of 42643204 in words is "forty-two million, six hundred forty-three thousand, two hundred four".