243434402 has 16 divisors (see below), whose sum is σ = 369991800. Its totient is φ = 120109440.

The previous prime is 243434377. The next prime is 243434447. The reversal of 243434402 is 204434342.

It can be written as a sum of positive squares in 4 ways, for example, as 167935681 + 75498721 = 12959^2 + 8689^2 .

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 7 ways as a sum of consecutive naturals, for example, 116624 + ... + 118692.

Almost surely, 2^243434402 is an apocalyptic number.

243434402 is a deficient number, since it is larger than the sum of its proper divisors (126557398).

243434402 is a wasteful number, since it uses less digits than its factorization.

243434402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2821.

The product of its (nonzero) digits is 9216, while the sum is 26.

The square root of 243434402 is about 15602.3844972491. The cubic root of 243434402 is about 624.3967743507.

Adding to 243434402 its reverse (204434342), we get a palindrome (447868744).

The spelling of 243434402 in words is "two hundred forty-three million, four hundred thirty-four thousand, four hundred two".