243142250 has 64 divisors (see below), whose sum is σ = 496903680. Its totient is φ = 88545600.

The previous prime is 243142243. The next prime is 243142261. The reversal of 243142250 is 52241342.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 256277 + ... + 257223.

It is an arithmetic number, because the mean of its divisors is an integer number (7764120).

Almost surely, 2^243142250 is an apocalyptic number.

243142250 is an abundant number, since it is smaller than the sum of its proper divisors (253761430).

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

243142250 is a wasteful number, since it uses less digits than its factorization.

243142250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1056 (or 1046 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 243142250 is about 15593.0192714561. The cubic root of 243142250 is about 624.1468893868.

Adding to 243142250 its reverse (52241342), we get a palindrome (295383592).

The spelling of 243142250 in words is "two hundred forty-three million, one hundred forty-two thousand, two hundred fifty".