42445364 has 36 divisors (see below), whose sum is σ = 82655244. Its totient is φ = 19049472.

The previous prime is 42445321. The next prime is 42445369. The reversal of 42445364 is 46354424.

It can be written as a sum of positive squares in 6 ways, for example, as 739600 + 41705764 = 860^2 + 6458^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 42445364.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42445369) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24164 + ... + 25860.

It is an arithmetic number, because the mean of its divisors is an integer number (2295979).

Almost surely, 2^42445364 is an apocalyptic number.

It is an amenable number.

42445364 is a deficient number, since it is larger than the sum of its proper divisors (40209880).

42445364 is a wasteful number, since it uses less digits than its factorization.

42445364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1764 (or 1749 counting only the distinct ones).

The product of its digits is 46080, while the sum is 32.

The square root of 42445364 is about 6515.0106676812. The cubic root of 42445364 is about 348.8269955855.

Adding to 42445364 its reverse (46354424), we get a palindrome (88799788).

The spelling of 42445364 in words is "forty-two million, four hundred forty-five thousand, three hundred sixty-four".