142245 has 24 divisors (see below), whose sum is σ = 257400. Its totient is φ = 72576.

The previous prime is 142237. The next prime is 142271. The reversal of 142245 is 542241.

142245 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 25281 + 116964 = 159^2 + 342^2 .

It is not a de Polignac number, because 142245 - 2³ = 142237 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1251 + ... + 1359.

It is an arithmetic number, because the mean of its divisors is an integer number (10725).

2¹⁴²²⁴⁵ is an apocalyptic number.

142245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

142245 is a deficient number, since it is larger than the sum of its proper divisors (115155).

142245 is a wasteful number, since it uses less digits than its factorization.

142245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149 (or 146 counting only the distinct ones).

The product of its digits is 320, while the sum is 18.

The square root of 142245 is about 377.1538147759. The cubic root of 142245 is about 52.2010216914.

Adding to 142245 its reverse (542241), we get a palindrome (684486).

The spelling of 142245 in words is "one hundred forty-two thousand, two hundred forty-five".