243121240030 has 16 divisors (see below), whose sum is σ = 438280298784. Its totient is φ = 97101370080.

The previous prime is 243121240001. The next prime is 243121240049. The reversal of 243121240030 is 30042121342.

It is a junction number, because it is equal to n+sod(n) for n = 243121239983 and 243121240010.

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, 18383802 + ... + 18397021.

It is an arithmetic number, because the mean of its divisors is an integer number (27392518674).

Almost surely, 2^243121240030 is an apocalyptic number.

243121240030 is a deficient number, since it is larger than the sum of its proper divisors (195159058754).

243121240030 is a wasteful number, since it uses less digits than its factorization.

243121240030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36781491.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 243121240030 its reverse (30042121342), we get a palindrome (273163361372).

The spelling of 243121240030 in words is "two hundred forty-three billion, one hundred twenty-one million, two hundred forty thousand, thirty".