242240421 has 8 divisors (see below), whose sum is σ = 323408160. Its totient is φ = 161283152.

The previous prime is 242240419. The next prime is 242240437. The reversal of 242240421 is 124042242.

242240421 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 242240421 - 2¹ = 242240419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242240441) 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, 49911 + ... + 54548.

It is an arithmetic number, because the mean of its divisors is an integer number (40426020).

Almost surely, 2^242240421 is an apocalyptic number.

It is an amenable number.

242240421 is a deficient number, since it is larger than the sum of its proper divisors (81167739).

242240421 is a wasteful number, since it uses less digits than its factorization.

242240421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105235.

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 242240421 is about 15564.0746914168. The cubic root of 242240421 is about 623.3742674431.

Adding to 242240421 its reverse (124042242), we get a palindrome (366282663).

The spelling of 242240421 in words is "two hundred forty-two million, two hundred forty thousand, four hundred twenty-one".