142005 has 8 divisors (see below), whose sum is σ = 227232. Its totient is φ = 75728.

The previous prime is 141991. The next prime is 142007. The reversal of 142005 is 500241.

142005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 142005 - 2⁶ = 141941 is a prime.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4719 + ... + 4748.

It is an arithmetic number, because the mean of its divisors is an integer number (28404).

2¹⁴²⁰⁰⁵ is an apocalyptic number.

142005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

142005 is a deficient number, since it is larger than the sum of its proper divisors (85227).

142005 is an equidigital number, since it uses as much as digits as its factorization.

142005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9475.

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 142005 is about 376.8355078811. The cubic root of 142005 is about 52.1716467917.

Adding to 142005 its reverse (500241), we get a palindrome (642246).

The spelling of 142005 in words is "one hundred forty-two thousand, five".