142187329 has 2 divisors, whose sum is σ = 142187330. Its totient is φ = 142187328.

The previous prime is 142187323. The next prime is 142187351. The reversal of 142187329 is 923781241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92160000 + 50027329 = 9600^2 + 7073^2 .

It is a cyclic number.

It is not a de Polignac number, because 142187329 - 2³ = 142187321 is a prime.

It is not a weakly prime, because it can be changed into another prime (142187321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71093664 + 71093665.

It is an arithmetic number, because the mean of its divisors is an integer number (71093665).

Almost surely, 2^142187329 is an apocalyptic number.

It is an amenable number.

142187329 is a deficient number, since it is larger than the sum of its proper divisors (1).

142187329 is an equidigital number, since it uses as much as digits as its factorization.

142187329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 37.

The square root of 142187329 is about 11924.2328474414. The cubic root of 142187329 is about 521.9396604310.

The spelling of 142187329 in words is "one hundred forty-two million, one hundred eighty-seven thousand, three hundred twenty-nine".