42234043213 has 2 divisors, whose sum is σ = 42234043214. Its totient is φ = 42234043212.

The previous prime is 42234043157. The next prime is 42234043217. The reversal of 42234043213 is 31234043224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23821452964 + 18412590249 = 154342^2 + 135693^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42234043213 is a prime.

It is a super-2 number, since 2×42234043213² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42234043217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21117021606 + 21117021607.

It is an arithmetic number, because the mean of its divisors is an integer number (21117021607).

Almost surely, 2^42234043213 is an apocalyptic number.

It is an amenable number.

42234043213 is a deficient number, since it is larger than the sum of its proper divisors (1).

42234043213 is an equidigital number, since it uses as much as digits as its factorization.

42234043213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 42234043213 its reverse (31234043224), we get a palindrome (73468086437).

The spelling of 42234043213 in words is "forty-two billion, two hundred thirty-four million, forty-three thousand, two hundred thirteen".