42444040000 has 70 divisors (see below), whose sum is σ = 105247524074. Its totient is φ = 16977600000.

The previous prime is 42444039959. The next prime is 42444040003. The reversal of 42444040000 is 4044424.

It can be written as a sum of positive squares in 5 ways, for example, as 9934507584 + 32509532416 = 99672^2 + 180304^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42444040003) by changing a digit.

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 9 ways as a sum of consecutive naturals, for example, 490551 + ... + 570550.

Almost surely, 2^42444040000 is an apocalyptic number.

42444040000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42444040000 is an abundant number, since it is smaller than the sum of its proper divisors (62803484074).

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

42444040000 is an equidigital number, since it uses as much as digits as its factorization.

42444040000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1061133 (or 1061108 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

Adding to 42444040000 its reverse (4044424), we get a palindrome (42448084424).

The spelling of 42444040000 in words is "forty-two billion, four hundred forty-four million, forty thousand".