242320147 has 2 divisors, whose sum is σ = 242320148. Its totient is φ = 242320146.

The previous prime is 242320103. The next prime is 242320171. The reversal of 242320147 is 741023242.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 242320147 - 2¹⁵ = 242287379 is a prime.

It is not a weakly prime, because it can be changed into another prime (242321147) 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, 121160073 + 121160074.

It is an arithmetic number, because the mean of its divisors is an integer number (121160074).

Almost surely, 2^242320147 is an apocalyptic number.

242320147 is a deficient number, since it is larger than the sum of its proper divisors (1).

242320147 is an equidigital number, since it uses as much as digits as its factorization.

242320147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 242320147 is about 15566.6356994696. The cubic root of 242320147 is about 623.4426481113.

Adding to 242320147 its reverse (741023242), we get a palindrome (983343389).

The spelling of 242320147 in words is "two hundred forty-two million, three hundred twenty thousand, one hundred forty-seven".