142613 has 4 divisors (see below), whose sum is σ = 151020. Its totient is φ = 134208.

The previous prime is 142609. The next prime is 142619. The reversal of 142613 is 316241.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 117649 + 24964 = 343^2 + 158^2 .

It is a cyclic number.

It is not a de Polignac number, because 142613 - 2² = 142609 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 8389 = 142613 / (1 + 4 + 2 + 6 + 1 + 3).

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 142591 and 142600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142619) 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, 4178 + ... + 4211.

It is an arithmetic number, because the mean of its divisors is an integer number (37755).

2¹⁴²⁶¹³ is an apocalyptic number.

It is an amenable number.

142613 is a deficient number, since it is larger than the sum of its proper divisors (8407).

142613 is an equidigital number, since it uses as much as digits as its factorization.

142613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8406.

The product of its digits is 144, while the sum is 17.

The square root of 142613 is about 377.6413642598. The cubic root of 142613 is about 52.2459990984.

Adding to 142613 its reverse (316241), we get a palindrome (458854).

The spelling of 142613 in words is "one hundred forty-two thousand, six hundred thirteen".