142205 has 16 divisors (see below), whose sum is σ = 207360. Its totient is φ = 91392.

The previous prime is 142193. The next prime is 142211. The reversal of 142205 is 502241.

It is not a de Polignac number, because 142205 - 2⁴ = 142189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142205.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 142205.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 476 + ... + 714.

It is an arithmetic number, because the mean of its divisors is an integer number (12960).

2¹⁴²²⁰⁵ is an apocalyptic number.

It is an amenable number.

142205 is a deficient number, since it is larger than the sum of its proper divisors (65155).

142205 is a wasteful number, since it uses less digits than its factorization.

142205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 142205 is about 377.1007822851. The cubic root of 142205 is about 52.1961281705.

Adding to 142205 its reverse (502241), we get a palindrome (644446).

The spelling of 142205 in words is "one hundred forty-two thousand, two hundred five".