242211839 has 2 divisors, whose sum is σ = 242211840. Its totient is φ = 242211838.

The previous prime is 242211811. The next prime is 242211859. The reversal of 242211839 is 938112242.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242211839 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242211859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121105919 + 121105920.

It is an arithmetic number, because the mean of its divisors is an integer number (121105920).

Almost surely, 2^242211839 is an apocalyptic number.

242211839 is a deficient number, since it is larger than the sum of its proper divisors (1).

242211839 is an equidigital number, since it uses as much as digits as its factorization.

242211839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 32.

The square root of 242211839 is about 15563.1564600501. The cubic root of 242211839 is about 623.3497491236.

The spelling of 242211839 in words is "two hundred forty-two million, two hundred eleven thousand, eight hundred thirty-nine".