642003444532 has 24 divisors (see below), whose sum is σ = 1147457687040. Its totient is φ = 314158954080.

The previous prime is 642003444409. The next prime is 642003444569. The reversal of 642003444532 is 235444300246.

It is a junction number, because it is equal to n+sod(n) for n = 642003444491 and 642003444500.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 5807269 + ... + 5916787.

It is an arithmetic number, because the mean of its divisors is an integer number (47810736960).

Almost surely, 2^642003444532 is an apocalyptic number.

It is an amenable number.

642003444532 is a deficient number, since it is larger than the sum of its proper divisors (505454242508).

642003444532 is a wasteful number, since it uses less digits than its factorization.

642003444532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140751 (or 140749 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 37.

Adding to 642003444532 its reverse (235444300246), we get a palindrome (877447744778).

The spelling of 642003444532 in words is "six hundred forty-two billion, three million, four hundred forty-four thousand, five hundred thirty-two".