42436213 has 4 divisors (see below), whose sum is σ = 42449760. Its totient is φ = 42422668.

The previous prime is 42436211. The next prime is 42436223. The reversal of 42436213 is 31263424.

42436213 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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 42436213 - 2¹ = 42436211 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 (42436211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 606 + ... + 9232.

It is an arithmetic number, because the mean of its divisors is an integer number (10612440).

Almost surely, 2^42436213 is an apocalyptic number.

It is an amenable number.

42436213 is a deficient number, since it is larger than the sum of its proper divisors (13547).

42436213 is an equidigital number, since it uses as much as digits as its factorization.

42436213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13546.

The product of its digits is 3456, while the sum is 25.

The square root of 42436213 is about 6514.3083285948. The cubic root of 42436213 is about 348.8019253543.

Adding to 42436213 its reverse (31263424), we get a palindrome (73699637).

The spelling of 42436213 in words is "forty-two million, four hundred thirty-six thousand, two hundred thirteen".