1140044420021 has 4 divisors (see below), whose sum is σ = 1227740144652. Its totient is φ = 1052348695392.

The previous prime is 1140044420017. The next prime is 1140044420027. The reversal of 1140044420021 is 1200244400411.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 48518872900 + 1091525547121 = 220270^2 + 1044761^2 .

It is a cyclic number.

It is not a de Polignac number, because 1140044420021 - 2² = 1140044420017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1140044420027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43847862296 + ... + 43847862321.

It is an arithmetic number, because the mean of its divisors is an integer number (306935036163).

Almost surely, 2^{1140044420021} is an apocalyptic number.

It is an amenable number.

1140044420021 is a deficient number, since it is larger than the sum of its proper divisors (87695724631).

1140044420021 is an equidigital number, since it uses as much as digits as its factorization.

1140044420021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87695724630.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 1140044420021 its reverse (1200244400411), we get a palindrome (2340288820432).

The spelling of 1140044420021 in words is "one trillion, one hundred forty billion, forty-four million, four hundred twenty thousand, twenty-one".