140440330401421 has 2 divisors, whose sum is σ = 140440330401422. Its totient is φ = 140440330401420.

The previous prime is 140440330401277. The next prime is 140440330401433. The reversal of 140440330401421 is 124104033044041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79107327292900 + 61333003108521 = 8894230^2 + 7831539^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140440330401421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140440330401521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70220165200710 + 70220165200711.

It is an arithmetic number, because the mean of its divisors is an integer number (70220165200711).

Almost surely, 2^{140440330401421} is an apocalyptic number.

It is an amenable number.

140440330401421 is a deficient number, since it is larger than the sum of its proper divisors (1).

140440330401421 is an equidigital number, since it uses as much as digits as its factorization.

140440330401421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 140440330401421 its reverse (124104033044041), we get a palindrome (264544363445462).

The spelling of 140440330401421 in words is "one hundred forty trillion, four hundred forty billion, three hundred thirty million, four hundred one thousand, four hundred twenty-one".