242216623 has 4 divisors (see below), whose sum is σ = 264236328. Its totient is φ = 220196920.

The previous prime is 242216621. The next prime is 242216627. The reversal of 242216623 is 326612242.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 242216623 - 2¹ = 242216621 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 242216591 and 242216600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242216621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11009836 + ... + 11009857.

It is an arithmetic number, because the mean of its divisors is an integer number (66059082).

Almost surely, 2^242216623 is an apocalyptic number.

242216623 is a deficient number, since it is larger than the sum of its proper divisors (22019705).

242216623 is a wasteful number, since it uses less digits than its factorization.

242216623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22019704.

The product of its digits is 6912, while the sum is 28.

The square root of 242216623 is about 15563.3101556192. The cubic root of 242216623 is about 623.3538530870.

Adding to 242216623 its reverse (326612242), we get a palindrome (568828865).

The spelling of 242216623 in words is "two hundred forty-two million, two hundred sixteen thousand, six hundred twenty-three".