142147 has 4 divisors (see below), whose sum is σ = 145656. Its totient is φ = 138640.

The previous prime is 142123. The next prime is 142151. The reversal of 142147 is 741241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 741241 = 31 ⋅23911.

It is a cyclic number.

It is not a de Polignac number, because 142147 - 2⁷ = 142019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1693 + ... + 1774.

It is an arithmetic number, because the mean of its divisors is an integer number (36414).

2¹⁴²¹⁴⁷ is an apocalyptic number.

142147 is a deficient number, since it is larger than the sum of its proper divisors (3509).

142147 is an equidigital number, since it uses as much as digits as its factorization.

142147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3508.

The product of its digits is 224, while the sum is 19.

The square root of 142147 is about 377.0238719233. The cubic root of 142147 is about 52.1890309350.

Adding to 142147 its reverse (741241), we get a palindrome (883388).

It can be divided in two parts, 142 and 147, that added together give a square (289 = 17²).

The spelling of 142147 in words is "one hundred forty-two thousand, one hundred forty-seven", and thus it is an iban number.