42204644 has 12 divisors (see below), whose sum is σ = 74793600. Its totient is φ = 20835048.

The previous prime is 42204623. The next prime is 42204677. The reversal of 42204644 is 44640224.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66464 + ... + 67095.

It is an arithmetic number, because the mean of its divisors is an integer number (6232800).

Almost surely, 2^42204644 is an apocalyptic number.

It is an amenable number.

42204644 is a deficient number, since it is larger than the sum of its proper divisors (32588956).

42204644 is a wasteful number, since it uses less digits than its factorization.

42204644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133642 (or 133640 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 42204644 is about 6496.5101400675. The cubic root of 42204644 is about 348.1663119267.

Adding to 42204644 its reverse (44640224), we get a palindrome (86844868).

The spelling of 42204644 in words is "forty-two million, two hundred four thousand, six hundred forty-four".