142442503135021 has 2 divisors, whose sum is σ = 142442503135022. Its totient is φ = 142442503135020.

The previous prime is 142442503135019. The next prime is 142442503135111. The reversal of 142442503135021 is 120531305244241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 142373339920900 + 69163214121 = 11932030^2 + 262989^2 .

It is a cyclic number.

It is not a de Polignac number, because 142442503135021 - 2¹ = 142442503135019 is a prime.

Together with 142442503135019, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142442503135001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71221251567510 + 71221251567511.

It is an arithmetic number, because the mean of its divisors is an integer number (71221251567511).

Almost surely, 2^{142442503135021} is an apocalyptic number.

It is an amenable number.

142442503135021 is a deficient number, since it is larger than the sum of its proper divisors (1).

142442503135021 is an equidigital number, since it uses as much as digits as its factorization.

142442503135021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 115200, while the sum is 37.

Adding to 142442503135021 its reverse (120531305244241), we get a palindrome (262973808379262).

The spelling of 142442503135021 in words is "one hundred forty-two trillion, four hundred forty-two billion, five hundred three million, one hundred thirty-five thousand, twenty-one".