140400445121 has 6 divisors (see below), whose sum is σ = 149145109830. Its totient is φ = 132141595136.

The previous prime is 140400445091. The next prime is 140400445139. The reversal of 140400445121 is 121544004041.

It can be written as a sum of positive squares in 3 ways, for example, as 85241225521 + 55159219600 = 291961^2 + 234860^2 .

It is not a de Polignac number, because 140400445121 - 2¹⁴ = 140400428737 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (140400445021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 242907056 + ... + 242907633.

It is an arithmetic number, because the mean of its divisors is an integer number (24857518305).

Almost surely, 2^140400445121 is an apocalyptic number.

It is an amenable number.

140400445121 is a deficient number, since it is larger than the sum of its proper divisors (8744664709).

140400445121 is an equidigital number, since it uses as much as digits as its factorization.

140400445121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485814723 (or 485814706 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 26.

Adding to 140400445121 its reverse (121544004041), we get a palindrome (261944449162).

The spelling of 140400445121 in words is "one hundred forty billion, four hundred million, four hundred forty-five thousand, one hundred twenty-one".