243135452 has 18 divisors (see below), whose sum is σ = 494954712. Its totient is φ = 104200824.

The previous prime is 243135443. The next prime is 243135463. The reversal of 243135452 is 254531342.

It is a happy number.

It is a super-2 number, since 2×243135452² = 118229696038488608, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 620048 + ... + 620439.

It is an arithmetic number, because the mean of its divisors is an integer number (27497484).

Almost surely, 2^243135452 is an apocalyptic number.

It is an amenable number.

243135452 is an abundant number, since it is smaller than the sum of its proper divisors (251819260).

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

243135452 is a wasteful number, since it uses less digits than its factorization.

243135452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1240505 (or 1240496 counting only the distinct ones).

The product of its digits is 14400, while the sum is 29.

The square root of 243135452 is about 15592.8012877738. The cubic root of 243135452 is about 624.1410725038.

Adding to 243135452 its reverse (254531342), we get a palindrome (497666794).

The spelling of 243135452 in words is "two hundred forty-three million, one hundred thirty-five thousand, four hundred fifty-two".