142312101521 has 2 divisors, whose sum is σ = 142312101522. Its totient is φ = 142312101520.

The previous prime is 142312101511. The next prime is 142312101527. The reversal of 142312101521 is 125101213241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86633092225 + 55679009296 = 294335^2 + 235964^2 .

It is a cyclic number.

It is not a de Polignac number, because 142312101521 - 2¹⁴ = 142312085137 is a prime.

It is not a weakly prime, because it can be changed into another prime (142312101527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71156050760 + 71156050761.

It is an arithmetic number, because the mean of its divisors is an integer number (71156050761).

Almost surely, 2^142312101521 is an apocalyptic number.

It is an amenable number.

142312101521 is a deficient number, since it is larger than the sum of its proper divisors (1).

142312101521 is an equidigital number, since it uses as much as digits as its factorization.

142312101521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 23.

Adding to 142312101521 its reverse (125101213241), we get a palindrome (267413314762).

The spelling of 142312101521 in words is "one hundred forty-two billion, three hundred twelve million, one hundred one thousand, five hundred twenty-one".