202241405 has 4 divisors (see below), whose sum is σ = 242689692. Its totient is φ = 161793120.

The previous prime is 202241399. The next prime is 202241467. The reversal of 202241405 is 504142202.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 504142202 = 2 ⋅252071101.

It can be written as a sum of positive squares in 2 ways, for example, as 33605209 + 168636196 = 5797^2 + 12986^2 .

It is not a de Polignac number, because 202241405 - 2²⁴ = 185464189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20224136 + ... + 20224145.

It is an arithmetic number, because the mean of its divisors is an integer number (60672423).

Almost surely, 2^202241405 is an apocalyptic number.

It is an amenable number.

202241405 is a deficient number, since it is larger than the sum of its proper divisors (40448287).

202241405 is an equidigital number, since it uses as much as digits as its factorization.

202241405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40448286.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 202241405 is about 14221.1604660098. The cubic root of 202241405 is about 586.9800729808.

Adding to 202241405 its reverse (504142202), we get a palindrome (706383607).

The spelling of 202241405 in words is "two hundred two million, two hundred forty-one thousand, four hundred five".