142525139129 has 2 divisors, whose sum is σ = 142525139130. Its totient is φ = 142525139128.

The previous prime is 142525139069. The next prime is 142525139131. The reversal of 142525139129 is 921931525241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100232394025 + 42292745104 = 316595^2 + 205652^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142525139129 is a prime.

Together with 142525139131, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142525139129.

It is not a weakly prime, because it can be changed into another prime (142525133129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71262569564 + 71262569565.

It is an arithmetic number, because the mean of its divisors is an integer number (71262569565).

Almost surely, 2^142525139129 is an apocalyptic number.

It is an amenable number.

142525139129 is a deficient number, since it is larger than the sum of its proper divisors (1).

142525139129 is an equidigital number, since it uses as much as digits as its factorization.

142525139129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 194400, while the sum is 44.

The spelling of 142525139129 in words is "one hundred forty-two billion, five hundred twenty-five million, one hundred thirty-nine thousand, one hundred twenty-nine".