42405444532 has 72 divisors (see below), whose sum is σ = 85199859360. Its totient is φ = 18293190720.

The previous prime is 42405444509. The next prime is 42405444539. The reversal of 42405444532 is 23544450424.

It is a junction number, because it is equal to n+sod(n) for n = 42405444491 and 42405444500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42405444539) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4436983 + ... + 4446529.

It is an arithmetic number, because the mean of its divisors is an integer number (1183331380).

Almost surely, 2^42405444532 is an apocalyptic number.

It is an amenable number.

42405444532 is an abundant number, since it is smaller than the sum of its proper divisors (42794414828).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42405444532 is a wasteful number, since it uses less digits than its factorization.

42405444532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9709 (or 9648 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 37.

Adding to 42405444532 its reverse (23544450424), we get a palindrome (65949894956).

The spelling of 42405444532 in words is "forty-two billion, four hundred five million, four hundred forty-four thousand, five hundred thirty-two".