140450021401 has 2 divisors, whose sum is σ = 140450021402. Its totient is φ = 140450021400.

The previous prime is 140450021377. The next prime is 140450021419. The reversal of 140450021401 is 104120054041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120234869001 + 20215152400 = 346749^2 + 142180^2 .

It is a cyclic number.

It is not a de Polignac number, because 140450021401 - 2⁹ = 140450020889 is a prime.

It is not a weakly prime, because it can be changed into another prime (140450021471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70225010700 + 70225010701.

It is an arithmetic number, because the mean of its divisors is an integer number (70225010701).

Almost surely, 2^140450021401 is an apocalyptic number.

It is an amenable number.

140450021401 is a deficient number, since it is larger than the sum of its proper divisors (1).

140450021401 is an equidigital number, since it uses as much as digits as its factorization.

140450021401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 640, while the sum is 22.

Adding to 140450021401 its reverse (104120054041), we get a palindrome (244570075442).

The spelling of 140450021401 in words is "one hundred forty billion, four hundred fifty million, twenty-one thousand, four hundred one".