42536644 has 12 divisors (see below), whose sum is σ = 74540844. Its totient is φ = 21239264.

The previous prime is 42536609. The next prime is 42536647. The reversal of 42536644 is 44663524.

It can be written as a sum of positive squares in 2 ways, for example, as 2214144 + 40322500 = 1488^2 + 6350^2 .

It is not an unprimeable number, because it can be changed into a prime (42536647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3787 + ... + 9970.

It is an arithmetic number, because the mean of its divisors is an integer number (6211737).

Almost surely, 2^42536644 is an apocalyptic number.

It is an amenable number.

42536644 is a deficient number, since it is larger than the sum of its proper divisors (32004200).

42536644 is a wasteful number, since it uses less digits than its factorization.

42536644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14534 (or 14532 counting only the distinct ones).

The product of its digits is 69120, while the sum is 34.

The square root of 42536644 is about 6522.0122661645. The cubic root of 42536644 is about 349.0768707775.

The spelling of 42536644 in words is "forty-two million, five hundred thirty-six thousand, six hundred forty-four".