142306 has 4 divisors (see below), whose sum is σ = 213462. Its totient is φ = 71152.

The previous prime is 142297. The next prime is 142319. The reversal of 142306 is 603241.

142306 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 an emirpimes, since its reverse is a distinct semiprime: 603241 = 719 ⋅839.

It can be written as a sum of positive squares in only one way, i.e., 140625 + 1681 = 375^2 + 41^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 142306.

It is a congruent number.

It is an unprimeable number.

142306 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35575 + ... + 35578.

2¹⁴²³⁰⁶ is an apocalyptic number.

142306 is a deficient number, since it is larger than the sum of its proper divisors (71156).

142306 is an equidigital number, since it uses as much as digits as its factorization.

142306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71155.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 142306 is about 377.2346749704. The cubic root of 142306 is about 52.2084825447.

Adding to 142306 its reverse (603241), we get a palindrome (745547).

The spelling of 142306 in words is "one hundred forty-two thousand, three hundred six".