242243145 has 24 divisors (see below), whose sum is σ = 433435392. Its totient is φ = 125028000.

The previous prime is 242243143. The next prime is 242243167. The reversal of 242243145 is 541342242.

It is not a de Polignac number, because 242243145 - 2¹ = 242243143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (242243143) 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 in 23 ways as a sum of consecutive naturals, for example, 85431 + ... + 88220.

It is an arithmetic number, because the mean of its divisors is an integer number (18059808).

Almost surely, 2^242243145 is an apocalyptic number.

It is an amenable number.

242243145 is a deficient number, since it is larger than the sum of its proper divisors (191192247).

242243145 is a wasteful number, since it uses less digits than its factorization.

242243145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173693 (or 173690 counting only the distinct ones).

The product of its digits is 7680, while the sum is 27.

The square root of 242243145 is about 15564.1622003884. The cubic root of 242243145 is about 623.3766040545.

Adding to 242243145 its reverse (541342242), we get a palindrome (783585387).

The spelling of 242243145 in words is "two hundred forty-two million, two hundred forty-three thousand, one hundred forty-five".