42806013 has 8 divisors (see below), whose sum is σ = 59556288. Its totient is φ = 27296544.

The previous prime is 42805999. The next prime is 42806041. The reversal of 42806013 is 31060824.

It is a happy number.

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

It is not a de Polignac number, because 42806013 - 2⁸ = 42805757 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42806053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 310120 + ... + 310257.

It is an arithmetic number, because the mean of its divisors is an integer number (7444536).

Almost surely, 2^42806013 is an apocalyptic number.

It is an amenable number.

42806013 is a deficient number, since it is larger than the sum of its proper divisors (16750275).

42806013 is a wasteful number, since it uses less digits than its factorization.

42806013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620403.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 42806013 is about 6542.6304343131. The cubic root of 42806013 is about 349.8121795000.

Adding to 42806013 its reverse (31060824), we get a palindrome (73866837).

The spelling of 42806013 in words is "forty-two million, eight hundred six thousand, thirteen".