40042240004440 has 32 divisors (see below), whose sum is σ = 90752668051680. Its totient is φ = 15899984349952.

The previous prime is 40042240004419. The next prime is 40042240004449. The reversal of 40042240004440 is 4440004224004.

It is a junction number, because it is equal to n+sod(n) for n = 40042240004399 and 40042240004408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40042240004449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3653483572 + ... + 3653494531.

It is an arithmetic number, because the mean of its divisors is an integer number (2836020876615).

Almost surely, 2^{40042240004440} is an apocalyptic number.

40042240004440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40042240004440 is an abundant number, since it is smaller than the sum of its proper divisors (50710428047240).

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

40042240004440 is a wasteful number, since it uses less digits than its factorization.

40042240004440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7306978251 (or 7306978247 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 40042240004440 its reverse (4440004224004), we get a palindrome (44482244228444).

The spelling of 40042240004440 in words is "forty trillion, forty-two billion, two hundred forty million, four thousand, four hundred forty".