142729289 has 2 divisors, whose sum is σ = 142729290. Its totient is φ = 142729288.

The previous prime is 142729259. The next prime is 142729291. The reversal of 142729289 is 982927241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113784889 + 28944400 = 10667^2 + 5380^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142729289 is a prime.

It is a super-3 number, since 3×142729289³ (a number of 25 digits) contains 333 as substring.

Together with 142729291, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (142729219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71364644 + 71364645.

It is an arithmetic number, because the mean of its divisors is an integer number (71364645).

Almost surely, 2^142729289 is an apocalyptic number.

It is an amenable number.

142729289 is a deficient number, since it is larger than the sum of its proper divisors (1).

142729289 is an equidigital number, since it uses as much as digits as its factorization.

142729289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 44.

The square root of 142729289 is about 11946.9363855342. The cubic root of 142729289 is about 522.6019599105.

The spelling of 142729289 in words is "one hundred forty-two million, seven hundred twenty-nine thousand, two hundred eighty-nine".