140044442401 has 2 divisors, whose sum is σ = 140044442402. Its totient is φ = 140044442400.

The previous prime is 140044442393. The next prime is 140044442471. The reversal of 140044442401 is 104244440041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74105906176 + 65938536225 = 272224^2 + 256785^2 .

It is a cyclic number.

It is not a de Polignac number, because 140044442401 - 2³ = 140044442393 is a prime.

It is a super-2 number, since 2×140044442401² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 140044442401.

It is not a weakly prime, because it can be changed into another prime (140044442471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70022221200 + 70022221201.

It is an arithmetic number, because the mean of its divisors is an integer number (70022221201).

Almost surely, 2^140044442401 is an apocalyptic number.

It is an amenable number.

140044442401 is a deficient number, since it is larger than the sum of its proper divisors (1).

140044442401 is an equidigital number, since it uses as much as digits as its factorization.

140044442401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8192, while the sum is 28.

Adding to 140044442401 its reverse (104244440041), we get a palindrome (244288882442).

The spelling of 140044442401 in words is "one hundred forty billion, forty-four million, four hundred forty-two thousand, four hundred one".