243321142 has 8 divisors (see below), whose sum is σ = 373883832. Its totient is φ = 118693200.

The previous prime is 243321137. The next prime is 243321149. The reversal of 243321142 is 241123342.

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 (243321149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1483584 + ... + 1483747.

It is an arithmetic number, because the mean of its divisors is an integer number (46735479).

Almost surely, 2^243321142 is an apocalyptic number.

243321142 is a deficient number, since it is larger than the sum of its proper divisors (130562690).

243321142 is a wasteful number, since it uses less digits than its factorization.

243321142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2967374.

The product of its digits is 1152, while the sum is 22.

The square root of 243321142 is about 15598.7545015620. The cubic root of 243321142 is about 624.2999239625.

Adding to 243321142 its reverse (241123342), we get a palindrome (484444484).

The spelling of 243321142 in words is "two hundred forty-three million, three hundred twenty-one thousand, one hundred forty-two".