242734889 has 2 divisors, whose sum is σ = 242734890. Its totient is φ = 242734888.

The previous prime is 242734829. The next prime is 242734913. The reversal of 242734889 is 988437242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 203547289 + 39187600 = 14267^2 + 6260^2 .

It is a cyclic number.

It is not a de Polignac number, because 242734889 - 2¹² = 242730793 is a prime.

It is not a weakly prime, because it can be changed into another prime (242734829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121367444 + 121367445.

It is an arithmetic number, because the mean of its divisors is an integer number (121367445).

Almost surely, 2^242734889 is an apocalyptic number.

It is an amenable number.

242734889 is a deficient number, since it is larger than the sum of its proper divisors (1).

242734889 is an equidigital number, since it uses as much as digits as its factorization.

242734889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 774144, while the sum is 47.

The square root of 242734889 is about 15579.9515082686. The cubic root of 242734889 is about 623.7981289042.

The spelling of 242734889 in words is "two hundred forty-two million, seven hundred thirty-four thousand, eight hundred eighty-nine".