140605036021 has 2 divisors, whose sum is σ = 140605036022. Its totient is φ = 140605036020.

The previous prime is 140605036001. The next prime is 140605036027. The reversal of 140605036021 is 120630506041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135266541796 + 5338494225 = 367786^2 + 73065^2 .

It is an emirp because it is prime and its reverse (120630506041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140605036021 - 2²⁹ = 140068165109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140605036027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70302518010 + 70302518011.

It is an arithmetic number, because the mean of its divisors is an integer number (70302518011).

Almost surely, 2^140605036021 is an apocalyptic number.

It is an amenable number.

140605036021 is a deficient number, since it is larger than the sum of its proper divisors (1).

140605036021 is an equidigital number, since it uses as much as digits as its factorization.

140605036021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 28.

The spelling of 140605036021 in words is "one hundred forty billion, six hundred five million, thirty-six thousand, twenty-one".