42442513 has 8 divisors (see below), whose sum is σ = 43390080. Its totient is φ = 41505360.

The previous prime is 42442483. The next prime is 42442541. The reversal of 42442513 is 31524424.

It is a happy number.

42442513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42442513 - 2¹³ = 42434321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42442583) 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 7 ways as a sum of consecutive naturals, for example, 5943 + ... + 10963.

It is an arithmetic number, because the mean of its divisors is an integer number (5423760).

Almost surely, 2^42442513 is an apocalyptic number.

It is an amenable number.

42442513 is a deficient number, since it is larger than the sum of its proper divisors (947567).

42442513 is a wasteful number, since it uses less digits than its factorization.

42442513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5207.

The product of its digits is 3840, while the sum is 25.

The square root of 42442513 is about 6514.7918616023. The cubic root of 42442513 is about 348.8191853251.

Adding to 42442513 its reverse (31524424), we get a palindrome (73966937).

The spelling of 42442513 in words is "forty-two million, four hundred forty-two thousand, five hundred thirteen".