242393381 has 2 divisors, whose sum is σ = 242393382. Its totient is φ = 242393380.

The previous prime is 242393357. The next prime is 242393407. The reversal of 242393381 is 183393242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 242300356 + 93025 = 15566^2 + 305^2 .

It is a cyclic number.

It is not a de Polignac number, because 242393381 - 2¹⁰ = 242392357 is a prime.

It is a super-2 number, since 2×242393381² = 117509102305222322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242393311) 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, 121196690 + 121196691.

It is an arithmetic number, because the mean of its divisors is an integer number (121196691).

Almost surely, 2^242393381 is an apocalyptic number.

It is an amenable number.

242393381 is a deficient number, since it is larger than the sum of its proper divisors (1).

242393381 is an equidigital number, since it uses as much as digits as its factorization.

242393381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 35.

The square root of 242393381 is about 15568.9877962570. The cubic root of 242393381 is about 623.5054474021.

The spelling of 242393381 in words is "two hundred forty-two million, three hundred ninety-three thousand, three hundred eighty-one".