142213 has 4 divisors (see below), whose sum is σ = 144288. Its totient is φ = 140140.

The previous prime is 142211. The next prime is 142217. The reversal of 142213 is 312241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 142213 - 2¹ = 142211 is a prime.

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

142213 is a modest number, since divided by 213 gives 142 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 142193 and 142202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142211) 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, 931 + ... + 1072.

It is an arithmetic number, because the mean of its divisors is an integer number (36072).

2¹⁴²²¹³ is an apocalyptic number.

It is an amenable number.

142213 is a deficient number, since it is larger than the sum of its proper divisors (2075).

142213 is an equidigital number, since it uses as much as digits as its factorization.

142213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2074.

The product of its digits is 48, while the sum is 13.

The square root of 142213 is about 377.1113893798. Note that the first 3 decimals coincide. The cubic root of 142213 is about 52.1971069481.

Adding to 142213 its reverse (312241), we get a palindrome (454454).

The spelling of 142213 in words is "one hundred forty-two thousand, two hundred thirteen".