42258817 has 4 divisors (see below), whose sum is σ = 42347520. Its totient is φ = 42170116.

The previous prime is 42258803. The next prime is 42258833. The reversal of 42258817 is 71885224.

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 a cyclic number.

It is not a de Polignac number, because 42258817 - 2¹¹ = 42256769 is a prime.

It is a super-2 number, since 2×42258817² = 3571615228478978, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42258877) 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, 43633 + ... + 44590.

It is an arithmetic number, because the mean of its divisors is an integer number (10586880).

Almost surely, 2^42258817 is an apocalyptic number.

It is an amenable number.

42258817 is a deficient number, since it is larger than the sum of its proper divisors (88703).

42258817 is an equidigital number, since it uses as much as digits as its factorization.

42258817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88702.

The product of its digits is 35840, while the sum is 37.

The square root of 42258817 is about 6500.6781953885. The cubic root of 42258817 is about 348.3152145721.

The spelling of 42258817 in words is "forty-two million, two hundred fifty-eight thousand, eight hundred seventeen".