42804544 has 14 divisors (see below), whose sum is σ = 84940394. Its totient is φ = 21402240.

The previous prime is 42804529. The next prime is 42804547. The reversal of 42804544 is 44540824.

It can be written as a sum of positive squares in only one way, i.e., 30470400 + 12334144 = 5520^2 + 3512^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42804547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334347 + ... + 334474.

It is an arithmetic number, because the mean of its divisors is an integer number (6067171).

Almost surely, 2^42804544 is an apocalyptic number.

It is an amenable number.

42804544 is a deficient number, since it is larger than the sum of its proper divisors (42135850).

42804544 is an equidigital number, since it uses as much as digits as its factorization.

42804544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668833 (or 668823 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 31.

The square root of 42804544 is about 6542.5181696347. The cubic root of 42804544 is about 349.8081778818.

The spelling of 42804544 in words is "forty-two million, eight hundred four thousand, five hundred forty-four".