42344013 has 4 divisors (see below), whose sum is σ = 56458688. Its totient is φ = 28229340.

The previous prime is 42344011. The next prime is 42344017. The reversal of 42344013 is 31044324.

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 42344013 - 2¹ = 42344011 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 (42344011) 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, 7057333 + ... + 7057338.

It is an arithmetic number, because the mean of its divisors is an integer number (14114672).

Almost surely, 2^42344013 is an apocalyptic number.

It is an amenable number.

42344013 is a deficient number, since it is larger than the sum of its proper divisors (14114675).

42344013 is a wasteful number, since it uses less digits than its factorization.

42344013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14114674.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 42344013 is about 6507.2277507399. The cubic root of 42344013 is about 348.5491313833.

Adding to 42344013 its reverse (31044324), we get a palindrome (73388337).

The spelling of 42344013 in words is "forty-two million, three hundred forty-four thousand, thirteen".