243134420 has 24 divisors (see below), whose sum is σ = 510972000. Its totient is φ = 97179552.

The previous prime is 243134417. The next prime is 243134453. The reversal of 243134420 is 24431342.

It is a super-2 number, since 2×243134420² = 118228692377472800, 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 7 ways as a sum of consecutive naturals, for example, 27731 + ... + 35429.

It is an arithmetic number, because the mean of its divisors is an integer number (21290500).

Almost surely, 2^243134420 is an apocalyptic number.

243134420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243134420 is an abundant number, since it is smaller than the sum of its proper divisors (267837580).

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

243134420 is a wasteful number, since it uses less digits than its factorization.

243134420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9287 (or 9285 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 243134420 is about 15592.7681955450. The cubic root of 243134420 is about 624.1401894370.

Adding to 243134420 its reverse (24431342), we get a palindrome (267565762).

The spelling of 243134420 in words is "two hundred forty-three million, one hundred thirty-four thousand, four hundred twenty".