242272909 has 2 divisors, whose sum is σ = 242272910. Its totient is φ = 242272908.

The previous prime is 242272897. The next prime is 242272913. The reversal of 242272909 is 909272242.

242272909 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 214710409 + 27562500 = 14653^2 + 5250^2 .

It is a cyclic number.

It is not a de Polignac number, because 242272909 - 2¹³ = 242264717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242272949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121136454 + 121136455.

It is an arithmetic number, because the mean of its divisors is an integer number (121136455).

Almost surely, 2^242272909 is an apocalyptic number.

It is an amenable number.

242272909 is a deficient number, since it is larger than the sum of its proper divisors (1).

242272909 is an equidigital number, since it uses as much as digits as its factorization.

242272909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 242272909 is about 15565.1183419851. The cubic root of 242272909 is about 623.4021340805.

The spelling of 242272909 in words is "two hundred forty-two million, two hundred seventy-two thousand, nine hundred nine".