242245739 has 2 divisors, whose sum is σ = 242245740. Its totient is φ = 242245738.

The previous prime is 242245727. The next prime is 242245777. The reversal of 242245739 is 937542242.

It is a happy number.

It is an a-pointer prime, because the next prime (242245777) can be obtained adding 242245739 to its sum of digits (38).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 242245739 - 2¹⁶ = 242180203 is a prime.

It is a super-2 number, since 2×242245739² = 117365996127312242, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (244245739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121122869 + 121122870.

It is an arithmetic number, because the mean of its divisors is an integer number (121122870).

Almost surely, 2^242245739 is an apocalyptic number.

242245739 is a deficient number, since it is larger than the sum of its proper divisors (1).

242245739 is an equidigital number, since it uses as much as digits as its factorization.

242245739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 38.

The square root of 242245739 is about 15564.2455326302. The cubic root of 242245739 is about 623.3788291372.

The spelling of 242245739 in words is "two hundred forty-two million, two hundred forty-five thousand, seven hundred thirty-nine".