42241217 has 4 divisors (see below), whose sum is σ = 42310740. Its totient is φ = 42171696.

The previous prime is 42241211. The next prime is 42241229. The reversal of 42241217 is 71214224.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11316496 + 30924721 = 3364^2 + 5561^2 .

It is a cyclic number.

It is not a de Polignac number, because 42241217 - 2⁶ = 42241153 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42241192 and 42241201.

It is not an unprimeable number, because it can be changed into a prime (42241211) 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, 33842 + ... + 35067.

It is an arithmetic number, because the mean of its divisors is an integer number (10577685).

Almost surely, 2^42241217 is an apocalyptic number.

It is an amenable number.

42241217 is a deficient number, since it is larger than the sum of its proper divisors (69523).

42241217 is an equidigital number, since it uses as much as digits as its factorization.

42241217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69522.

The product of its digits is 896, while the sum is 23.

The square root of 42241217 is about 6499.3243494997. The cubic root of 42241217 is about 348.2668522857.

The spelling of 42241217 in words is "forty-two million, two hundred forty-one thousand, two hundred seventeen".