140424414120421 has 2 divisors, whose sum is σ = 140424414120422. Its totient is φ = 140424414120420.

The previous prime is 140424414120413. The next prime is 140424414120437. The reversal of 140424414120421 is 124021414424041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 131952064987521 + 8472349132900 = 11487039^2 + 2910730^2 .

It is a cyclic number.

It is not a de Polignac number, because 140424414120421 - 2³ = 140424414120413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140424414120121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70212207060210 + 70212207060211.

It is an arithmetic number, because the mean of its divisors is an integer number (70212207060211).

Almost surely, 2^{140424414120421} is an apocalyptic number.

It is an amenable number.

140424414120421 is a deficient number, since it is larger than the sum of its proper divisors (1).

140424414120421 is an equidigital number, since it uses as much as digits as its factorization.

140424414120421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32768, while the sum is 34.

Adding to 140424414120421 its reverse (124021414424041), we get a palindrome (264445828544462).

The spelling of 140424414120421 in words is "one hundred forty trillion, four hundred twenty-four billion, four hundred fourteen million, one hundred twenty thousand, four hundred twenty-one".