42217253 has 8 divisors (see below), whose sum is σ = 45696000. Its totient is φ = 38771568.

The previous prime is 42217237. The next prime is 42217277. The reversal of 42217253 is 35271224.

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

It is not a de Polignac number, because 42217253 - 2⁴ = 42217237 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 (42217223) 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, 5573 + ... + 10746.

It is an arithmetic number, because the mean of its divisors is an integer number (5712000).

Almost surely, 2^42217253 is an apocalyptic number.

It is an amenable number.

42217253 is a deficient number, since it is larger than the sum of its proper divisors (3478747).

42217253 is a wasteful number, since it uses less digits than its factorization.

42217253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16531.

The product of its digits is 3360, while the sum is 26.

The square root of 42217253 is about 6497.4805117061. The cubic root of 42217253 is about 348.2009810334.

Adding to 42217253 its reverse (35271224), we get a palindrome (77488477).

The spelling of 42217253 in words is "forty-two million, two hundred seventeen thousand, two hundred fifty-three".