243414021 has 8 divisors (see below), whose sum is σ = 328199040. Its totient is φ = 160452512.

The previous prime is 243414019. The next prime is 243414071. The reversal of 243414021 is 120414342.

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 243414021 - 2¹ = 243414019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243414071) 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, 455565 + ... + 456098.

It is an arithmetic number, because the mean of its divisors is an integer number (41024880).

Almost surely, 2^243414021 is an apocalyptic number.

It is an amenable number.

243414021 is a deficient number, since it is larger than the sum of its proper divisors (84785019).

243414021 is an equidigital number, since it uses as much as digits as its factorization.

243414021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 911755.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 243414021 is about 15601.7313462321. The cubic root of 243414021 is about 624.3793484573.

Adding to 243414021 its reverse (120414342), we get a palindrome (363828363).

The spelling of 243414021 in words is "two hundred forty-three million, four hundred fourteen thousand, twenty-one".