242121323 has 2 divisors, whose sum is σ = 242121324. Its totient is φ = 242121322.

The previous prime is 242121311. The next prime is 242121329. The reversal of 242121323 is 323121242.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 242121323 - 2¹⁰ = 242120299 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 242121295 and 242121304.

It is not a weakly prime, because it can be changed into another prime (242121329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121060661 + 121060662.

It is an arithmetic number, because the mean of its divisors is an integer number (121060662).

Almost surely, 2^242121323 is an apocalyptic number.

242121323 is a deficient number, since it is larger than the sum of its proper divisors (1).

242121323 is an equidigital number, since it uses as much as digits as its factorization.

242121323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 20.

The square root of 242121323 is about 15560.2481664015. The cubic root of 242121323 is about 623.2720896168.

Adding to 242121323 its reverse (323121242), we get a palindrome (565242565).

The spelling of 242121323 in words is "two hundred forty-two million, one hundred twenty-one thousand, three hundred twenty-three".