242737189 has 2 divisors, whose sum is σ = 242737190. Its totient is φ = 242737188.

The previous prime is 242737133. The next prime is 242737207. The reversal of 242737189 is 981737242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 232044289 + 10692900 = 15233^2 + 3270^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242737189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242737129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121368594 + 121368595.

It is an arithmetic number, because the mean of its divisors is an integer number (121368595).

Almost surely, 2^242737189 is an apocalyptic number.

It is an amenable number.

242737189 is a deficient number, since it is larger than the sum of its proper divisors (1).

242737189 is an equidigital number, since it uses as much as digits as its factorization.

242737189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 169344, while the sum is 43.

The square root of 242737189 is about 15580.0253209037. The cubic root of 242737189 is about 623.8000991349.

The spelling of 242737189 in words is "two hundred forty-two million, seven hundred thirty-seven thousand, one hundred eighty-nine".