202240421 has 8 divisors (see below), whose sum is σ = 206522784. Its totient is φ = 197975440.

The previous prime is 202240411. The next prime is 202240433. The reversal of 202240421 is 124042202.

It is a happy number.

202240421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 202240421 - 2¹⁰ = 202239397 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 202240421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202240411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20666 + ... + 28836.

It is an arithmetic number, because the mean of its divisors is an integer number (25815348).

Almost surely, 2^202240421 is an apocalyptic number.

It is an amenable number.

202240421 is a deficient number, since it is larger than the sum of its proper divisors (4282363).

202240421 is an equidigital number, since it uses as much as digits as its factorization.

202240421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8691.

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

The square root of 202240421 is about 14221.1258696349. The cubic root of 202240421 is about 586.9791210008.

Adding to 202240421 its reverse (124042202), we get a palindrome (326282623).

The spelling of 202240421 in words is "two hundred two million, two hundred forty thousand, four hundred twenty-one".