1440020004424 has 8 divisors (see below), whose sum is σ = 2700037508310. Its totient is φ = 720010002208.

The previous prime is 1440020004391. The next prime is 1440020004427. The reversal of 1440020004424 is 4244000200441.

It can be written as a sum of positive squares in only one way, i.e., 1389970260900 + 50049743524 = 1178970^2 + 223718^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1440020004424² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1440020004427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90001250269 + ... + 90001250284.

Almost surely, 2^{1440020004424} is an apocalyptic number.

It is an amenable number.

1440020004424 is a deficient number, since it is larger than the sum of its proper divisors (1260017503886).

1440020004424 is a wasteful number, since it uses less digits than its factorization.

1440020004424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180002500559 (or 180002500555 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 25.

Adding to 1440020004424 its reverse (4244000200441), we get a palindrome (5684020204865).

The spelling of 1440020004424 in words is "one trillion, four hundred forty billion, twenty million, four thousand, four hundred twenty-four".