142305 has 16 divisors (see below), whose sum is σ = 233280. Its totient is φ = 74048.

The previous prime is 142297. The next prime is 142319. The reversal of 142305 is 503241.

142305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 142305 - 2³ = 142297 is a prime.

It is a super-3 number, since 3×142305³ = 8645333151067875, which contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 706 + ... + 884.

It is an arithmetic number, because the mean of its divisors is an integer number (14580).

2¹⁴²³⁰⁵ is an apocalyptic number.

142305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

142305 is a deficient number, since it is larger than the sum of its proper divisors (90975).

142305 is a wasteful number, since it uses less digits than its factorization.

142305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 142305 is about 377.2333495332. The cubic root of 142305 is about 52.2083602528.

Adding to 142305 its reverse (503241), we get a palindrome (645546).

The spelling of 142305 in words is "one hundred forty-two thousand, three hundred five".