403442520305242 has 24 divisors (see below), whose sum is σ = 667768272368148. Its totient is φ = 182669411358720.

The previous prime is 403442520305233. The next prime is 403442520305299. The reversal of 403442520305242 is 242503025244304.

It can be written as a sum of positive squares in 2 ways, for example, as 344423081532321 + 59019438772921 = 18558639^2 + 7682411^2 .

It is a junction number, because it is equal to n+sod(n) for n = 403442520305195 and 403442520305204.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3243357753 + ... + 3243482140.

Almost surely, 2^{403442520305242} is an apocalyptic number.

403442520305242 is a deficient number, since it is larger than the sum of its proper divisors (264325752062906).

403442520305242 is a wasteful number, since it uses less digits than its factorization.

403442520305242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6486840174 (or 6486840163 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 40.

Adding to 403442520305242 its reverse (242503025244304), we get a palindrome (645945545549546).

The spelling of 403442520305242 in words is "four hundred three trillion, four hundred forty-two billion, five hundred twenty million, three hundred five thousand, two hundred forty-two".