42302644 has 6 divisors (see below), whose sum is σ = 74029634. Its totient is φ = 21151320.

The previous prime is 42302641. The next prime is 42302653. The reversal of 42302644 is 44620324.

42302644 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 only one way, i.e., 36723600 + 5579044 = 6060^2 + 2362^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42302641) 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 as a sum of consecutive naturals, namely, 5287827 + ... + 5287834.

Almost surely, 2^42302644 is an apocalyptic number.

It is an amenable number.

42302644 is a deficient number, since it is larger than the sum of its proper divisors (31726990).

42302644 is a wasteful number, since it uses less digits than its factorization.

42302644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10575665 (or 10575663 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 42302644 is about 6504.0482778036. The cubic root of 42302644 is about 348.4355865848.

Adding to 42302644 its reverse (44620324), we get a palindrome (86922968).

The spelling of 42302644 in words is "forty-two million, three hundred two thousand, six hundred forty-four".