243420130 has 16 divisors (see below), whose sum is σ = 440073720. Its totient is φ = 96941952.

The previous prime is 243420101. The next prime is 243420137. The reversal of 243420130 is 31024342.

243420130 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 238980681 + 4439449 = 15459^2 + 2107^2 .

It is a junction number, because it is equal to n+sod(n) for n = 243420098 and 243420107.

It is not an unprimeable number, because it can be changed into a prime (243420137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50859 + ... + 55438.

Almost surely, 2^243420130 is an apocalyptic number.

243420130 is a deficient number, since it is larger than the sum of its proper divisors (196653590).

243420130 is a wasteful number, since it uses less digits than its factorization.

243420130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106533.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 243420130 is about 15601.9271245574. The cubic root of 243420130 is about 624.3845717959.

Adding to 243420130 its reverse (31024342), we get a palindrome (274444472).

The spelling of 243420130 in words is "two hundred forty-three million, four hundred twenty thousand, one hundred thirty".