243034454222140 has 144 divisors (see below), whose sum is σ = 612995255550720. Its totient is φ = 80619049405440.

The previous prime is 243034454221969. The next prime is 243034454222179. The reversal of 243034454222140 is 41222454430342.

It is a junction number, because it is equal to n+sod(n) for n = 243034454222093 and 243034454222102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 127531192 + ... + 129422848.

It is an arithmetic number, because the mean of its divisors is an integer number (4256911496880).

Almost surely, 2^{243034454222140} is an apocalyptic number.

243034454222140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243034454222140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (306497627775360).

243034454222140 is an abundant number, since it is smaller than the sum of its proper divisors (369960801328580).

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

243034454222140 is a wasteful number, since it uses less digits than its factorization.

243034454222140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1895940 (or 1895931 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 40.

The spelling of 243034454222140 in words is "two hundred forty-three trillion, thirty-four billion, four hundred fifty-four million, two hundred twenty-two thousand, one hundred forty".