42213 has 4 divisors (see below), whose sum is σ = 56288. Its totient is φ = 28140.

The previous prime is 42209. The next prime is 42221. The reversal of 42213 is 31224.

42213 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 42213 - 2² = 42209 is a prime.

It is a D-number.

It is a Duffinian number.

It is a plaindrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42223) 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, 7033 + ... + 7038.

It is an arithmetic number, because the mean of its divisors is an integer number (14072).

2⁴²²¹³ is an apocalyptic number.

It is an amenable number.

42213 is a deficient number, since it is larger than the sum of its proper divisors (14075).

42213 is a wasteful number, since it uses less digits than its factorization.

42213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14074.

The product of its digits is 48, while the sum is 12.

The square root of 42213 is about 205.4580249102. The cubic root of 42213 is about 34.8189287958.

Adding to 42213 its reverse (31224), we get a palindrome (73437).

It can be divided in two parts, 4221 and 3, that added together give a palindrome (4224).

The spelling of 42213 in words is "forty-two thousand, two hundred thirteen".