242932981 has 2 divisors, whose sum is σ = 242932982. Its totient is φ = 242932980.

The previous prime is 242932919. The next prime is 242932997. The reversal of 242932981 is 189239242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 241647025 + 1285956 = 15545^2 + 1134^2 .

It is a cyclic number.

It is not a de Polignac number, because 242932981 - 2¹³ = 242924789 is a prime.

It is a super-2 number, since 2×242932981² = 118032866515092722, 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 (242932901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121466490 + 121466491.

It is an arithmetic number, because the mean of its divisors is an integer number (121466491).

Almost surely, 2^242932981 is an apocalyptic number.

It is an amenable number.

242932981 is a deficient number, since it is larger than the sum of its proper divisors (1).

242932981 is an equidigital number, since it uses as much as digits as its factorization.

242932981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 40.

The square root of 242932981 is about 15586.3074844557. The cubic root of 242932981 is about 623.9677732713.

The spelling of 242932981 in words is "two hundred forty-two million, nine hundred thirty-two thousand, nine hundred eighty-one".