142169 has 2 divisors, whose sum is σ = 142170. Its totient is φ = 142168.

The previous prime is 142159. The next prime is 142183. The reversal of 142169 is 961241.

It is a happy number.

142169 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115600 + 26569 = 340^2 + 163^2 .

It is an emirp because it is prime and its reverse (961241) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142169 is a prime.

It is a super-2 number, since 2×142169² = 40424049122, which contains 22 as substring.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 142169.

It is not a weakly prime, because it can be changed into another prime (142159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71084 + 71085.

It is an arithmetic number, because the mean of its divisors is an integer number (71085).

2¹⁴²¹⁶⁹ is an apocalyptic number.

It is an amenable number.

142169 is a deficient number, since it is larger than the sum of its proper divisors (1).

142169 is an equidigital number, since it uses as much as digits as its factorization.

142169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 23.

The square root of 142169 is about 377.0530466659. The cubic root of 142169 is about 52.1917232171.

The spelling of 142169 in words is "one hundred forty-two thousand, one hundred sixty-nine".