243342100 has 18 divisors (see below), whose sum is σ = 528052574. Its totient is φ = 97336800.

The previous prime is 243342091. The next prime is 243342149. The reversal of 243342100 is 1243342.

It can be written as a sum of positive squares in 3 ways, for example, as 7043716 + 236298384 = 2654^2 + 15372^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1216611 + ... + 1216810.

Almost surely, 2^243342100 is an apocalyptic number.

243342100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243342100 is an abundant number, since it is smaller than the sum of its proper divisors (284710474).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243342100 is a wasteful number, since it uses less digits than its factorization.

243342100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2433435 (or 2433428 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 243342100 is about 15599.4262715011. The cubic root of 243342100 is about 624.3178477401.

Adding to 243342100 its reverse (1243342), we get a palindrome (244585442).

The spelling of 243342100 in words is "two hundred forty-three million, three hundred forty-two thousand, one hundred".