243022421 has 8 divisors (see below), whose sum is σ = 249220800. Its totient is φ = 236901280.

The previous prime is 243022399. The next prime is 243022453. The reversal of 243022421 is 124220342.

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 243022421 - 2¹⁰ = 243021397 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243022393 and 243022402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243028421) 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, 12911 + ... + 25548.

It is an arithmetic number, because the mean of its divisors is an integer number (31152600).

Almost surely, 2^243022421 is an apocalyptic number.

It is an amenable number.

243022421 is a deficient number, since it is larger than the sum of its proper divisors (6198379).

243022421 is an equidigital number, since it uses as much as digits as its factorization.

243022421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38619.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 243022421 is about 15589.1764054423. The cubic root of 243022421 is about 624.0443387366.

Adding to 243022421 its reverse (124220342), we get a palindrome (367242763).

The spelling of 243022421 in words is "two hundred forty-three million, twenty-two thousand, four hundred twenty-one".