42405544340 has 24 divisors (see below), whose sum is σ = 89058921000. Its totient is φ = 16960831488.

The previous prime is 42405544339. The next prime is 42405544409. The reversal of 42405544340 is 4344550424.

It can be written as a sum of positive squares in 4 ways, for example, as 885776644 + 41519767696 = 29762^2 + 203764^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 42405544340.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 184964 + ... + 344996.

It is an arithmetic number, because the mean of its divisors is an integer number (3710788375).

Almost surely, 2^42405544340 is an apocalyptic number.

It is an amenable number.

42405544340 is an abundant number, since it is smaller than the sum of its proper divisors (46653376660).

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

42405544340 is a wasteful number, since it uses less digits than its factorization.

42405544340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173291 (or 173289 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 35.

The spelling of 42405544340 in words is "forty-two billion, four hundred five million, five hundred forty-four thousand, three hundred forty".