243400132 has 12 divisors (see below), whose sum is σ = 440638380. Its totient is φ = 117503456.

The previous prime is 243400123. The next prime is 243400139. The reversal of 243400132 is 231004342.

It can be written as a sum of positive squares in 2 ways, for example, as 188403076 + 54997056 = 13726^2 + 7416^2 .

It is not an unprimeable number, because it can be changed into a prime (243400139) 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, 1049023 + ... + 1049254.

It is an arithmetic number, because the mean of its divisors is an integer number (36719865).

Almost surely, 2^243400132 is an apocalyptic number.

It is an amenable number.

243400132 is a deficient number, since it is larger than the sum of its proper divisors (197238248).

243400132 is a wasteful number, since it uses less digits than its factorization.

243400132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2098310 (or 2098308 counting only the distinct ones).

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

The square root of 243400132 is about 15601.2862290261. The cubic root of 243400132 is about 624.3674727107.

Adding to 243400132 its reverse (231004342), we get a palindrome (474404474).

The spelling of 243400132 in words is "two hundred forty-three million, four hundred thousand, one hundred thirty-two".