142289 has 4 divisors (see below), whose sum is σ = 162624. Its totient is φ = 121956.

The previous prime is 142271. The next prime is 142297. The reversal of 142289 is 982241.

142289 is nontrivially palindromic in base 13.

142289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 982241 = 13 ⋅75557.

It is a cyclic number.

It is not a de Polignac number, because 142289 - 2¹⁶ = 76753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142189) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10157 + ... + 10170.

It is an arithmetic number, because the mean of its divisors is an integer number (40656).

2¹⁴²²⁸⁹ is an apocalyptic number.

It is an amenable number.

142289 is a deficient number, since it is larger than the sum of its proper divisors (20335).

142289 is an equidigital number, since it uses as much as digits as its factorization.

142289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20334.

The product of its digits is 1152, while the sum is 26.

The square root of 142289 is about 377.2121419043. The cubic root of 142289 is about 52.2064035048.

The spelling of 142289 in words is "one hundred forty-two thousand, two hundred eighty-nine".