42643364 has 6 divisors (see below), whose sum is σ = 74625894. Its totient is φ = 21321680.

The previous prime is 42643343. The next prime is 42643373. The reversal of 42643364 is 46334624.

42643364 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., 36844900 + 5798464 = 6070^2 + 2408^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 42643364.

It is an unprimeable number.

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, 5330417 + ... + 5330424.

It is an arithmetic number, because the mean of its divisors is an integer number (12437649).

Almost surely, 2^42643364 is an apocalyptic number.

It is an amenable number.

42643364 is a deficient number, since it is larger than the sum of its proper divisors (31982530).

42643364 is a wasteful number, since it uses less digits than its factorization.

42643364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10660845 (or 10660843 counting only the distinct ones).

The product of its digits is 41472, while the sum is 32.

The square root of 42643364 is about 6530.1886649621. The cubic root of 42643364 is about 349.3685594524.

Adding to 42643364 its reverse (46334624), we get a palindrome (88977988).

The spelling of 42643364 in words is "forty-two million, six hundred forty-three thousand, three hundred sixty-four".