243542030 has 16 divisors (see below), whose sum is σ = 440827920. Its totient is φ = 96871872.

The previous prime is 243542027. The next prime is 243542041. The reversal of 243542030 is 30245342.

It is a super-3 number, since 3×243542030³ (a number of 26 digits) contains 333 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 243541987 and 243542005.

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, 66239 + ... + 69818.

It is an arithmetic number, because the mean of its divisors is an integer number (27551745).

Almost surely, 2^243542030 is an apocalyptic number.

243542030 is a deficient number, since it is larger than the sum of its proper divisors (197285890).

243542030 is a wasteful number, since it uses less digits than its factorization.

243542030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136243.

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 243542030 is about 15605.8332042861. The cubic root of 243542030 is about 624.4887808954.

Adding to 243542030 its reverse (30245342), we get a palindrome (273787372).

The spelling of 243542030 in words is "two hundred forty-three million, five hundred forty-two thousand, thirty".