242404009 has 2 divisors, whose sum is σ = 242404010. Its totient is φ = 242404008.

The previous prime is 242403991. The next prime is 242404027. The reversal of 242404009 is 900404242.

It is a balanced prime because it is at equal distance from previous prime (242403991) and next prime (242404027).

It can be written as a sum of positive squares in only one way, i.e., 195440400 + 46963609 = 13980^2 + 6853^2 .

It is a cyclic number.

It is not a de Polignac number, because 242404009 - 2⁵ = 242403977 is a prime.

It is not a weakly prime, because it can be changed into another prime (242404039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121202004 + 121202005.

It is an arithmetic number, because the mean of its divisors is an integer number (121202005).

Almost surely, 2^242404009 is an apocalyptic number.

It is an amenable number.

242404009 is a deficient number, since it is larger than the sum of its proper divisors (1).

242404009 is an equidigital number, since it uses as much as digits as its factorization.

242404009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 242404009 is about 15569.3291120716. The cubic root of 242404009 is about 623.5145600259.

The spelling of 242404009 in words is "two hundred forty-two million, four hundred four thousand, nine".