42334013 has 2 divisors, whose sum is σ = 42334014. Its totient is φ = 42334012.

The previous prime is 42334009. The next prime is 42334021. The reversal of 42334013 is 31043324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34727449 + 7606564 = 5893^2 + 2758^2 .

It is a cyclic number.

It is not a de Polignac number, because 42334013 - 2² = 42334009 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42334213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21167006 + 21167007.

It is an arithmetic number, because the mean of its divisors is an integer number (21167007).

Almost surely, 2^42334013 is an apocalyptic number.

It is an amenable number.

42334013 is a deficient number, since it is larger than the sum of its proper divisors (1).

42334013 is an equidigital number, since it uses as much as digits as its factorization.

42334013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 42334013 is about 6506.4593290053. The cubic root of 42334013 is about 348.5216913316.

Adding to 42334013 its reverse (31043324), we get a palindrome (73377337).

The spelling of 42334013 in words is "forty-two million, three hundred thirty-four thousand, thirteen".