42044644 has 48 divisors (see below), whose sum is σ = 82252800. Its totient is φ = 18713376.

The previous prime is 42044633. The next prime is 42044647. The reversal of 42044644 is 44644024.

It is not an unprimeable number, because it can be changed into a prime (42044647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116937 + ... + 117295.

It is an arithmetic number, because the mean of its divisors is an integer number (1713600).

Almost surely, 2^42044644 is an apocalyptic number.

It is an amenable number.

42044644 is a deficient number, since it is larger than the sum of its proper divisors (40208156).

42044644 is a wasteful number, since it uses less digits than its factorization.

42044644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472 (or 470 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

The square root of 42044644 is about 6484.1841429743. The cubic root of 42044644 is about 347.7257825693.

Adding to 42044644 its reverse (44644024), we get a palindrome (86688668).

The spelling of 42044644 in words is "forty-two million, forty-four thousand, six hundred forty-four".