242381911 has 2 divisors, whose sum is σ = 242381912. Its totient is φ = 242381910.

The previous prime is 242381899. The next prime is 242381939. The reversal of 242381911 is 119183242.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242381911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242381311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121190955 + 121190956.

It is an arithmetic number, because the mean of its divisors is an integer number (121190956).

Almost surely, 2^242381911 is an apocalyptic number.

242381911 is a deficient number, since it is larger than the sum of its proper divisors (1).

242381911 is an equidigital number, since it uses as much as digits as its factorization.

242381911 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 31.

The square root of 242381911 is about 15568.6194314075. The cubic root of 242381911 is about 623.4956125347.

The spelling of 242381911 in words is "two hundred forty-two million, three hundred eighty-one thousand, nine hundred eleven".