243421532 has 12 divisors (see below), whose sum is σ = 426184920. Its totient is φ = 121654416.

The previous prime is 243421531. The next prime is 243421543. The reversal of 243421532 is 235124342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243421531) 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, 3482 + ... + 22337.

It is an arithmetic number, because the mean of its divisors is an integer number (35515410).

Almost surely, 2^243421532 is an apocalyptic number.

It is an amenable number.

243421532 is a deficient number, since it is larger than the sum of its proper divisors (182763388).

243421532 is a wasteful number, since it uses less digits than its factorization.

243421532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28180 (or 28178 counting only the distinct ones).

The product of its digits is 5760, while the sum is 26.

The square root of 243421532 is about 15601.9720548397. The cubic root of 243421532 is about 624.3857705265.

Adding to 243421532 its reverse (235124342), we get a palindrome (478545874).

The spelling of 243421532 in words is "two hundred forty-three million, four hundred twenty-one thousand, five hundred thirty-two".