242451317 has 2 divisors, whose sum is σ = 242451318. Its totient is φ = 242451316.

The previous prime is 242451301. The next prime is 242451337. The reversal of 242451317 is 713154242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144817156 + 97634161 = 12034^2 + 9881^2 .

It is a cyclic number.

It is not a de Polignac number, because 242451317 - 2⁴ = 242451301 is a prime.

It is a super-2 number, since 2×242451317² = 117565282230068978, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 242451317.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242451337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121225658 + 121225659.

It is an arithmetic number, because the mean of its divisors is an integer number (121225659).

Almost surely, 2^242451317 is an apocalyptic number.

It is an amenable number.

242451317 is a deficient number, since it is larger than the sum of its proper divisors (1).

242451317 is an equidigital number, since it uses as much as digits as its factorization.

242451317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6720, while the sum is 29.

The square root of 242451317 is about 15570.8483070127. The cubic root of 242451317 is about 623.5551194597. Note that the first 3 decimals are identical.

The spelling of 242451317 in words is "two hundred forty-two million, four hundred fifty-one thousand, three hundred seventeen".