243142430 has 32 divisors (see below), whose sum is σ = 480729600. Its totient is φ = 88130592.

The previous prime is 243142399. The next prime is 243142433. The reversal of 243142430 is 34241342.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a junction number, because it is equal to n+sod(n) for n = 243142396 and 243142405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243142433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23450 + ... + 32189.

It is an arithmetic number, because the mean of its divisors is an integer number (15022800).

Almost surely, 2^243142430 is an apocalyptic number.

243142430 is a deficient number, since it is larger than the sum of its proper divisors (237587170).

243142430 is a wasteful number, since it uses less digits than its factorization.

243142430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55688.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 243142430 is about 15593.0250432685. The cubic root of 243142430 is about 624.1470434070.

Adding to 243142430 its reverse (34241342), we get a palindrome (277383772).

The spelling of 243142430 in words is "two hundred forty-three million, one hundred forty-two thousand, four hundred thirty".