242242143 has 16 divisors (see below), whose sum is σ = 379456896. Its totient is φ = 135519840.

The previous prime is 242242139. The next prime is 242242151. The reversal of 242242143 is 341242242.

It is not a de Polignac number, because 242242143 - 2² = 242242139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242242123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 281905 + ... + 282762.

It is an arithmetic number, because the mean of its divisors is an integer number (23716056).

Almost surely, 2^242242143 is an apocalyptic number.

242242143 is a deficient number, since it is larger than the sum of its proper divisors (137214753).

242242143 is a wasteful number, since it uses less digits than its factorization.

242242143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564694.

The product of its digits is 3072, while the sum is 24.

The square root of 242242143 is about 15564.1300110221. The cubic root of 242242143 is about 623.3757445541.

Adding to 242242143 its reverse (341242242), we get a palindrome (583484385).

Subtracting 242242143 from its reverse (341242242), we obtain a palindrome (99000099).

The spelling of 242242143 in words is "two hundred forty-two million, two hundred forty-two thousand, one hundred forty-three".