42545213 has 8 divisors (see below), whose sum is σ = 43409280. Its totient is φ = 41689440.

The previous prime is 42545183. The next prime is 42545221. The reversal of 42545213 is 31254524.

It is a happy number.

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 42545213 - 2¹² = 42541117 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 (42565213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8858 + ... + 12788.

It is an arithmetic number, because the mean of its divisors is an integer number (5426160).

Almost surely, 2^42545213 is an apocalyptic number.

It is an amenable number.

42545213 is a deficient number, since it is larger than the sum of its proper divisors (864067).

42545213 is a wasteful number, since it uses less digits than its factorization.

42545213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4147.

The product of its digits is 4800, while the sum is 26.

The square root of 42545213 is about 6522.6691622372. The cubic root of 42545213 is about 349.1003096965.

Adding to 42545213 its reverse (31254524), we get a palindrome (73799737).

It can be divided in two parts, 4254521 and 3, that added together give a palindrome (4254524).

The spelling of 42545213 in words is "forty-two million, five hundred forty-five thousand, two hundred thirteen".