242943977 has 2 divisors, whose sum is σ = 242943978. Its totient is φ = 242943976.

The previous prime is 242943973. The next prime is 242944001. The reversal of 242943977 is 779349242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 220938496 + 22005481 = 14864^2 + 4691^2 .

It is a cyclic number.

It is not a de Polignac number, because 242943977 - 2² = 242943973 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (242943973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121471988 + 121471989.

It is an arithmetic number, because the mean of its divisors is an integer number (121471989).

Almost surely, 2^242943977 is an apocalyptic number.

It is an amenable number.

242943977 is a deficient number, since it is larger than the sum of its proper divisors (1).

242943977 is an equidigital number, since it uses as much as digits as its factorization.

242943977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 762048, while the sum is 47.

The square root of 242943977 is about 15586.6602259753. The cubic root of 242943977 is about 623.9771874536.

The spelling of 242943977 in words is "two hundred forty-two million, nine hundred forty-three thousand, nine hundred seventy-seven".