42242201 has 4 divisors (see below), whose sum is σ = 42423732. Its totient is φ = 42060672.

The previous prime is 42242173. The next prime is 42242251. The reversal of 42242201 is 10224224.

It is a happy number.

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 27040000 + 15202201 = 5200^2 + 3899^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42242201 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42242201.

It is not an unprimeable number, because it can be changed into a prime (42242251) 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, 90416 + ... + 90881.

It is an arithmetic number, because the mean of its divisors is an integer number (10605933).

Almost surely, 2^42242201 is an apocalyptic number.

It is an amenable number.

42242201 is a deficient number, since it is larger than the sum of its proper divisors (181531).

42242201 is a wasteful number, since it uses less digits than its factorization.

42242201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181530.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 42242201 is about 6499.4000492353. The cubic root of 42242201 is about 348.2695565316.

Adding to 42242201 its reverse (10224224), we get a palindrome (52466425).

The spelling of 42242201 in words is "forty-two million, two hundred forty-two thousand, two hundred one".