242002889 has 2 divisors, whose sum is σ = 242002890. Its totient is φ = 242002888.

The previous prime is 242002847. The next prime is 242002897. The reversal of 242002889 is 988200242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 170041600 + 71961289 = 13040^2 + 8483^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242002889 is a prime.

It is not a weakly prime, because it can be changed into another prime (242002819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121001444 + 121001445.

It is an arithmetic number, because the mean of its divisors is an integer number (121001445).

Almost surely, 2^242002889 is an apocalyptic number.

It is an amenable number.

242002889 is a deficient number, since it is larger than the sum of its proper divisors (1).

242002889 is an equidigital number, since it uses as much as digits as its factorization.

242002889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 242002889 is about 15556.4420418038. The cubic root of 242002889 is about 623.1704482236.

The spelling of 242002889 in words is "two hundred forty-two million, two thousand, eight hundred eighty-nine".