243055134 has 64 divisors (see below), whose sum is σ = 632378880. Its totient is φ = 67746240.

The previous prime is 243055079. The next prime is 243055147. The reversal of 243055134 is 431550342.

243055134 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 243055098 and 243055107.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7657 + ... + 23339.

It is an arithmetic number, because the mean of its divisors is an integer number (9880920).

Almost surely, 2^243055134 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243055134, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (316189440).

243055134 is an abundant number, since it is smaller than the sum of its proper divisors (389323746).

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

243055134 is a wasteful number, since it uses less digits than its factorization.

243055134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15742 (or 15736 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 243055134 is about 15590.2255916969. The cubic root of 243055134 is about 624.0723381374.

The spelling of 243055134 in words is "two hundred forty-three million, fifty-five thousand, one hundred thirty-four".