42147044 has 12 divisors (see below), whose sum is σ = 74065068. Its totient is φ = 20985600.

The previous prime is 42147043. The next prime is 42147067. The reversal of 42147044 is 44074124.

It can be written as a sum of positive squares in 2 ways, for example, as 30382144 + 11764900 = 5512^2 + 3430^2 .

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (42147043) 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, 20897 + ... + 22824.

It is an arithmetic number, because the mean of its divisors is an integer number (6172089).

Almost surely, 2^42147044 is an apocalyptic number.

It is an amenable number.

42147044 is a deficient number, since it is larger than the sum of its proper divisors (31918024).

42147044 is a wasteful number, since it uses less digits than its factorization.

42147044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43966 (or 43964 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 26.

The square root of 42147044 is about 6492.0754770720. The cubic root of 42147044 is about 348.0078498251.

The spelling of 42147044 in words is "forty-two million, one hundred forty-seven thousand, forty-four".