140242205321 has 2 divisors, whose sum is σ = 140242205322. Its totient is φ = 140242205320.

The previous prime is 140242205309. The next prime is 140242205399. The reversal of 140242205321 is 123502242041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108217313296 + 32024892025 = 328964^2 + 178955^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140242205321 is a prime.

It is not a weakly prime, because it can be changed into another prime (140242204321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70121102660 + 70121102661.

It is an arithmetic number, because the mean of its divisors is an integer number (70121102661).

Almost surely, 2^140242205321 is an apocalyptic number.

It is an amenable number.

140242205321 is a deficient number, since it is larger than the sum of its proper divisors (1).

140242205321 is an equidigital number, since it uses as much as digits as its factorization.

140242205321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 140242205321 its reverse (123502242041), we get a palindrome (263744447362).

The spelling of 140242205321 in words is "one hundred forty billion, two hundred forty-two million, two hundred five thousand, three hundred twenty-one".