142870129 has 2 divisors, whose sum is σ = 142870130. Its totient is φ = 142870128.

The previous prime is 142870127. The next prime is 142870171. The reversal of 142870129 is 921078241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139712400 + 3157729 = 11820^2 + 1777^2 .

It is a cyclic number.

It is not a de Polignac number, because 142870129 - 2¹ = 142870127 is a prime.

Together with 142870127, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 142870094 and 142870103.

It is not a weakly prime, because it can be changed into another prime (142870121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71435064 + 71435065.

It is an arithmetic number, because the mean of its divisors is an integer number (71435065).

Almost surely, 2^142870129 is an apocalyptic number.

It is an amenable number.

142870129 is a deficient number, since it is larger than the sum of its proper divisors (1).

142870129 is an equidigital number, since it uses as much as digits as its factorization.

142870129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 142870129 is about 11952.8293303301. The cubic root of 142870129 is about 522.7737981837.

The spelling of 142870129 in words is "one hundred forty-two million, eight hundred seventy thousand, one hundred twenty-nine".