141243454021 has 2 divisors, whose sum is σ = 141243454022. Its totient is φ = 141243454020.

The previous prime is 141243454003. The next prime is 141243454049. The reversal of 141243454021 is 120454342141.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140595751521 + 647702500 = 374961^2 + 25450^2 .

It is a cyclic number.

It is not a de Polignac number, because 141243454021 - 2²⁹ = 140706583109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (141243454061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70621727010 + 70621727011.

It is an arithmetic number, because the mean of its divisors is an integer number (70621727011).

Almost surely, 2^141243454021 is an apocalyptic number.

It is an amenable number.

141243454021 is a deficient number, since it is larger than the sum of its proper divisors (1).

141243454021 is an equidigital number, since it uses as much as digits as its factorization.

141243454021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15360, while the sum is 31.

Adding to 141243454021 its reverse (120454342141), we get a palindrome (261697796162).

The spelling of 141243454021 in words is "one hundred forty-one billion, two hundred forty-three million, four hundred fifty-four thousand, twenty-one".