142202411521 has 2 divisors, whose sum is σ = 142202411522. Its totient is φ = 142202411520.

The previous prime is 142202411509. The next prime is 142202411539. The reversal of 142202411521 is 125114202241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132863895025 + 9338516496 = 364505^2 + 96636^2 .

It is a cyclic number.

It is not a de Polignac number, because 142202411521 - 2¹¹ = 142202409473 is a prime.

It is not a weakly prime, because it can be changed into another prime (142202411621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71101205760 + 71101205761.

It is an arithmetic number, because the mean of its divisors is an integer number (71101205761).

Almost surely, 2^142202411521 is an apocalyptic number.

It is an amenable number.

142202411521 is a deficient number, since it is larger than the sum of its proper divisors (1).

142202411521 is an equidigital number, since it uses as much as digits as its factorization.

142202411521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1280, while the sum is 25.

Adding to 142202411521 its reverse (125114202241), we get a palindrome (267316613762).

The spelling of 142202411521 in words is "one hundred forty-two billion, two hundred two million, four hundred eleven thousand, five hundred twenty-one".