243420441111 has 20 divisors (see below), whose sum is σ = 363642896232. Its totient is φ = 162273675888.

The previous prime is 243420441079. The next prime is 243420441133. The reversal of 243420441111 is 111144024342.

243420441111 is a `hidden beast` number, since 2 + 4 + 34 + 204 + 411 + 11 = 666.

It is not a de Polignac number, because 243420441111 - 2⁵ = 243420441079 is a prime.

It is a super-2 number, since 2×243420441111² (a number of 24 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243420441161) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2701000 + ... + 2789666.

Almost surely, 2^243420441111 is an apocalyptic number.

243420441111 is a deficient number, since it is larger than the sum of its proper divisors (120222455121).

243420441111 is an equidigital number, since it uses as much as digits as its factorization.

243420441111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122572 (or 122563 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 243420441111 its reverse (111144024342), we get a palindrome (354564465453).

The spelling of 243420441111 in words is "two hundred forty-three billion, four hundred twenty million, four hundred forty-one thousand, one hundred eleven".