243222142 has 8 divisors (see below), whose sum is σ = 364899600. Its totient is φ = 121588944.

The previous prime is 243222103. The next prime is 243222143. The reversal of 243222142 is 241222342.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243222143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14359 + ... + 26317.

It is an arithmetic number, because the mean of its divisors is an integer number (45612450).

Almost surely, 2^243222142 is an apocalyptic number.

243222142 is a deficient number, since it is larger than the sum of its proper divisors (121677458).

243222142 is a wasteful number, since it uses less digits than its factorization.

243222142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22130.

The product of its digits is 1536, while the sum is 22.

The square root of 243222142 is about 15595.5808484327. The cubic root of 243222142 is about 624.2152429025.

Adding to 243222142 its reverse (241222342), we get a palindrome (484444484).

The spelling of 243222142 in words is "two hundred forty-three million, two hundred twenty-two thousand, one hundred forty-two".