42543044 has 36 divisors (see below), whose sum is σ = 81195156. Its totient is φ = 19436544.

The previous prime is 42543043. The next prime is 42543049. The reversal of 42543044 is 44034524.

It can be written as a sum of positive squares in 6 ways, for example, as 22202944 + 20340100 = 4712^2 + 4510^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42543041) 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 11 ways as a sum of consecutive naturals, for example, 92864 + ... + 93320.

It is an arithmetic number, because the mean of its divisors is an integer number (2255421).

Almost surely, 2^42543044 is an apocalyptic number.

It is an amenable number.

42543044 is a deficient number, since it is larger than the sum of its proper divisors (38652112).

42543044 is a wasteful number, since it uses less digits than its factorization.

42543044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552 (or 513 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 26.

The square root of 42543044 is about 6522.5028938284. The cubic root of 42543044 is about 349.0943770946.

Adding to 42543044 its reverse (44034524), we get a palindrome (86577568).

The spelling of 42543044 in words is "forty-two million, five hundred forty-three thousand, forty-four".