42443044402 has 12 divisors (see below), whose sum is σ = 69978408318. Its totient is φ = 19292292800.

The previous prime is 42443044387. The next prime is 42443044409. The reversal of 42443044402 is 20444034424.

It can be written as a sum of positive squares in only one way, i.e., 29029003641 + 13414040761 = 170379^2 + 115819^2 .

It is a super-2 number, since 2×42443044402² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42443044409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 87691999 + ... + 87692482.

Almost surely, 2^42443044402 is an apocalyptic number.

42443044402 is a deficient number, since it is larger than the sum of its proper divisors (27535363916).

42443044402 is a wasteful number, since it uses less digits than its factorization.

42443044402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175384505 (or 175384494 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 31.

Adding to 42443044402 its reverse (20444034424), we get a palindrome (62887078826).

The spelling of 42443044402 in words is "forty-two billion, four hundred forty-three million, forty-four thousand, four hundred two".