142249 has 4 divisors (see below), whose sum is σ = 144720. Its totient is φ = 139780.

The previous prime is 142237. The next prime is 142271. The reversal of 142249 is 942241.

142249 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.

It is a cyclic number.

It is not a de Polignac number, because 142249 - 2⁵ = 142217 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142049) 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, 1147 + ... + 1264.

It is an arithmetic number, because the mean of its divisors is an integer number (36180).

2¹⁴²²⁴⁹ is an apocalyptic number.

It is an amenable number.

142249 is a deficient number, since it is larger than the sum of its proper divisors (2471).

142249 is an equidigital number, since it uses as much as digits as its factorization.

142249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2470.

The product of its digits is 576, while the sum is 22.

The square root of 142249 is about 377.1591176148. The cubic root of 142249 is about 52.2015109930.

The spelling of 142249 in words is "one hundred forty-two thousand, two hundred forty-nine".