142043124242021 has 2 divisors, whose sum is σ = 142043124242022. Its totient is φ = 142043124242020.

The previous prime is 142043124242009. The next prime is 142043124242051. The reversal of 142043124242021 is 120242421340241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139688170050625 + 2354954191396 = 11818975^2 + 1534586^2 .

It is a cyclic number.

It is not a de Polignac number, because 142043124242021 - 2¹⁸ = 142043123979877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142043124242051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71021562121010 + 71021562121011.

It is an arithmetic number, because the mean of its divisors is an integer number (71021562121011).

Almost surely, 2^{142043124242021} is an apocalyptic number.

It is an amenable number.

142043124242021 is a deficient number, since it is larger than the sum of its proper divisors (1).

142043124242021 is an equidigital number, since it uses as much as digits as its factorization.

142043124242021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24576, while the sum is 32.

Adding to 142043124242021 its reverse (120242421340241), we get a palindrome (262285545582262).

The spelling of 142043124242021 in words is "one hundred forty-two trillion, forty-three billion, one hundred twenty-four million, two hundred forty-two thousand, twenty-one".