142280129 has 2 divisors, whose sum is σ = 142280130. Its totient is φ = 142280128.

The previous prime is 142280087. The next prime is 142280153. The reversal of 142280129 is 921082241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 140659600 + 1620529 = 11860^2 + 1273^2 .

It is a cyclic number.

It is not a de Polignac number, because 142280129 - 2¹⁶ = 142214593 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (142280029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71140064 + 71140065.

It is an arithmetic number, because the mean of its divisors is an integer number (71140065).

Almost surely, 2^142280129 is an apocalyptic number.

It is an amenable number.

142280129 is a deficient number, since it is larger than the sum of its proper divisors (1).

142280129 is an equidigital number, since it uses as much as digits as its factorization.

142280129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 142280129 is about 11928.1234483887. The cubic root of 142280129 is about 522.0531854716.

The spelling of 142280129 in words is "one hundred forty-two million, two hundred eighty thousand, one hundred twenty-nine".