140213013120421 has 2 divisors, whose sum is σ = 140213013120422. Its totient is φ = 140213013120420.

The previous prime is 140213013120391. The next prime is 140213013120449. The reversal of 140213013120421 is 124021310312041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131490116683396 + 8722896437025 = 11466914^2 + 2953455^2 .

It is a cyclic number.

It is not a de Polignac number, because 140213013120421 - 2⁷ = 140213013120293 is a prime.

It is a super-3 number, since 3×140213013120421³ (a number of 43 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140213013120721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70106506560210 + 70106506560211.

It is an arithmetic number, because the mean of its divisors is an integer number (70106506560211).

Almost surely, 2^{140213013120421} is an apocalyptic number.

It is an amenable number.

140213013120421 is a deficient number, since it is larger than the sum of its proper divisors (1).

140213013120421 is an equidigital number, since it uses as much as digits as its factorization.

140213013120421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 140213013120421 its reverse (124021310312041), we get a palindrome (264234323432462).

The spelling of 140213013120421 in words is "one hundred forty trillion, two hundred thirteen billion, thirteen million, one hundred twenty thousand, four hundred twenty-one".