242408709 has 12 divisors (see below), whose sum is σ = 362220300. Its totient is φ = 156033024.

The previous prime is 242408701. The next prime is 242408717. The reversal of 242408709 is 907804242.

242408709 is a `hidden beast` number, since 242 + 408 + 7 + 0 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (242408701) and next prime (242408717).

It can be written as a sum of positive squares in 2 ways, for example, as 145878084 + 96530625 = 12078^2 + 9825^2 .

It is not a de Polignac number, because 242408709 - 2³ = 242408701 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242408701) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 464124 + ... + 464645.

It is an arithmetic number, because the mean of its divisors is an integer number (30185025).

Almost surely, 2^242408709 is an apocalyptic number.

242408709 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

242408709 is a deficient number, since it is larger than the sum of its proper divisors (119811591).

242408709 is a wasteful number, since it uses less digits than its factorization.

242408709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 928804 (or 928801 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 242408709 is about 15569.4800491217. The cubic root of 242408709 is about 623.5185897990.

The spelling of 242408709 in words is "two hundred forty-two million, four hundred eight thousand, seven hundred nine".