42422213 has 4 divisors (see below), whose sum is σ = 42933408. Its totient is φ = 41911020.

The previous prime is 42422203. The next prime is 42422227. The reversal of 42422213 is 31222424.

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 42422213 - 2⁸ = 42421957 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 (42422203) 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, 255473 + ... + 255638.

It is an arithmetic number, because the mean of its divisors is an integer number (10733352).

Almost surely, 2^42422213 is an apocalyptic number.

It is an amenable number.

42422213 is a deficient number, since it is larger than the sum of its proper divisors (511195).

42422213 is an equidigital number, since it uses as much as digits as its factorization.

42422213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511194.

The product of its digits is 768, while the sum is 20.

The square root of 42422213 is about 6513.2336822810. The cubic root of 42422213 is about 348.7635637466.

Adding to 42422213 its reverse (31222424), we get a palindrome (73644637).

The spelling of 42422213 in words is "forty-two million, four hundred twenty-two thousand, two hundred thirteen".