242316421 has 8 divisors (see below), whose sum is σ = 247737600. Its totient is φ = 236948448.

The previous prime is 242316413. The next prime is 242316433. The reversal of 242316421 is 124613242.

It is a happy number.

242316421 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 not a de Polignac number, because 242316421 - 2³ = 242316413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242316401) 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, 4021 + ... + 22378.

It is an arithmetic number, because the mean of its divisors is an integer number (30967200).

Almost surely, 2^242316421 is an apocalyptic number.

It is an amenable number.

242316421 is a deficient number, since it is larger than the sum of its proper divisors (5421179).

242316421 is a wasteful number, since it uses less digits than its factorization.

242316421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26603.

The product of its digits is 2304, while the sum is 25.

The square root of 242316421 is about 15566.5160199706. The cubic root of 242316421 is about 623.4394526703.

Adding to 242316421 its reverse (124613242), we get a palindrome (366929663).

The spelling of 242316421 in words is "two hundred forty-two million, three hundred sixteen thousand, four hundred twenty-one".