4002444040420 has 48 divisors (see below), whose sum is σ = 9645724142208. Its totient is φ = 1366572464640.

The previous prime is 4002444040379. The next prime is 4002444040423. The reversal of 4002444040420 is 240404442004.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (4002444040423) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 59279302 + ... + 59346781.

It is an arithmetic number, because the mean of its divisors is an integer number (200952586296).

Almost surely, 2^{4002444040420} is an apocalyptic number.

It is an amenable number.

4002444040420 is an abundant number, since it is smaller than the sum of its proper divisors (5643280101788).

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

4002444040420 is a wasteful number, since it uses less digits than its factorization.

4002444040420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118626340 (or 118626338 counting only the distinct ones).

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

Adding to 4002444040420 its reverse (240404442004), we get a palindrome (4242848482424).

The spelling of 4002444040420 in words is "four trillion, two billion, four hundred forty-four million, forty thousand, four hundred twenty".