42544030442 has 72 divisors (see below), whose sum is σ = 72059640492. Its totient is φ = 18828057600.

The previous prime is 42544030369. The next prime is 42544030447. The reversal of 42544030442 is 24403044524.

It can be written as a sum of positive squares in 6 ways, for example, as 23162100481 + 19381929961 = 152191^2 + 139219^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42544030399 and 42544030408.

It is not an unprimeable number, because it can be changed into a prime (42544030447) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 18650342 + ... + 18652622.

Almost surely, 2^42544030442 is an apocalyptic number.

42544030442 is a deficient number, since it is larger than the sum of its proper divisors (29515610050).

42544030442 is a wasteful number, since it uses less digits than its factorization.

42544030442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2424 (or 2384 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 32.

Adding to 42544030442 its reverse (24403044524), we get a palindrome (66947074966).

The spelling of 42544030442 in words is "forty-two billion, five hundred forty-four million, thirty thousand, four hundred forty-two".