242041381 has 2 divisors, whose sum is σ = 242041382. Its totient is φ = 242041380.

The previous prime is 242041379. The next prime is 242041391. The reversal of 242041381 is 183140242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 153512100 + 88529281 = 12390^2 + 9409^2 .

It is a cyclic number.

It is not a de Polignac number, because 242041381 - 2¹ = 242041379 is a prime.

It is a super-2 number, since 2×242041381² = 117168060232774322, which contains 22 as substring.

Together with 242041379, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242041391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121020690 + 121020691.

It is an arithmetic number, because the mean of its divisors is an integer number (121020691).

Almost surely, 2^242041381 is an apocalyptic number.

It is an amenable number.

242041381 is a deficient number, since it is larger than the sum of its proper divisors (1).

242041381 is an equidigital number, since it uses as much as digits as its factorization.

242041381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 242041381 is about 15557.6791649654. The cubic root of 242041381 is about 623.2034861284.

The spelling of 242041381 in words is "two hundred forty-two million, forty-one thousand, three hundred eighty-one".