42544505 has 8 divisors (see below), whose sum is σ = 51184392. Its totient is φ = 33948288.

The previous prime is 42544499. The next prime is 42544507. The reversal of 42544505 is 50544524.

42544505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1032256 + 41512249 = 1016^2 + 6443^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42544505 - 2¹⁰ = 42543481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42544507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8732 + ... + 12701.

It is an arithmetic number, because the mean of its divisors is an integer number (6398049).

Almost surely, 2^42544505 is an apocalyptic number.

It is an amenable number.

42544505 is a deficient number, since it is larger than the sum of its proper divisors (8639887).

42544505 is a wasteful number, since it uses less digits than its factorization.

42544505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21835.

The product of its (nonzero) digits is 16000, while the sum is 29.

The square root of 42544505 is about 6522.6148897509. The cubic root of 42544505 is about 349.0983732124.

The spelling of 42544505 in words is "forty-two million, five hundred forty-four thousand, five hundred five".