142042129 has 2 divisors, whose sum is σ = 142042130. Its totient is φ = 142042128.

The previous prime is 142042127. The next prime is 142042141. The reversal of 142042129 is 921240241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89870400 + 52171729 = 9480^2 + 7223^2 .

It is a cyclic number.

It is not a de Polignac number, because 142042129 - 2¹ = 142042127 is a prime.

Together with 142042127, it forms a pair of twin primes.

It is a nialpdrome in base 16.

It is not a weakly prime, because it can be changed into another prime (142042127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71021064 + 71021065.

It is an arithmetic number, because the mean of its divisors is an integer number (71021065).

Almost surely, 2^142042129 is an apocalyptic number.

It is an amenable number.

142042129 is a deficient number, since it is larger than the sum of its proper divisors (1).

142042129 is an equidigital number, since it uses as much as digits as its factorization.

142042129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 142042129 is about 11918.1428502934. The cubic root of 142042129 is about 521.7619337400.

The spelling of 142042129 in words is "one hundred forty-two million, forty-two thousand, one hundred twenty-nine".