142586 has 4 divisors (see below), whose sum is σ = 213882. Its totient is φ = 71292.

The previous prime is 142573. The next prime is 142589. The reversal of 142586 is 685241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 685241 = 29 ⋅23629.

It can be written as a sum of positive squares in only one way, i.e., 72361 + 70225 = 269^2 + 265^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 142586.

It is not an unprimeable number, because it can be changed into a prime (142589) by changing a digit.

142586 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, 35645 + ... + 35648.

2¹⁴²⁵⁸⁶ is an apocalyptic number.

142586 is a deficient number, since it is larger than the sum of its proper divisors (71296).

142586 is an equidigital number, since it uses as much as digits as its factorization.

142586 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71295.

The product of its digits is 1920, while the sum is 26.

The square root of 142586 is about 377.6056143650. The cubic root of 142586 is about 52.2427017576.

The spelling of 142586 in words is "one hundred forty-two thousand, five hundred eighty-six".