42042403044 has 72 divisors (see below), whose sum is σ = 116405485560. Its totient is φ = 12734948352.

The previous prime is 42042403037. The next prime is 42042403063. The reversal of 42042403044 is 44030424024.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 14573318400 + 27469084644 = 120720^2 + 165738^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42042402999 and 42042403017.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1166679 + ... + 1202174.

It is an arithmetic number, because the mean of its divisors is an integer number (1616742855).

Almost surely, 2^42042403044 is an apocalyptic number.

It is an amenable number.

42042403044 is an abundant number, since it is smaller than the sum of its proper divisors (74363082516).

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

42042403044 is a wasteful number, since it uses less digits than its factorization.

42042403044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2368909 (or 2368904 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 27.

Adding to 42042403044 its reverse (44030424024), we get a palindrome (86072827068).

The spelling of 42042403044 in words is "forty-two billion, forty-two million, four hundred three thousand, forty-four".