243142454 has 8 divisors (see below), whose sum is σ = 364840320. Its totient is φ = 121529016.

The previous prime is 243142447. The next prime is 243142463. The reversal of 243142454 is 454241342.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 13334 + ... + 25769.

It is an arithmetic number, because the mean of its divisors is an integer number (45605040).

Almost surely, 2^243142454 is an apocalyptic number.

243142454 is a deficient number, since it is larger than the sum of its proper divisors (121697866).

243142454 is a wasteful number, since it uses less digits than its factorization.

243142454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42214.

The product of its digits is 15360, while the sum is 29.

The square root of 243142454 is about 15593.0258128434. The cubic root of 243142454 is about 624.1470639430.

Adding to 243142454 its reverse (454241342), we get a palindrome (697383796).

The spelling of 243142454 in words is "two hundred forty-three million, one hundred forty-two thousand, four hundred fifty-four".