243043423040 has 56 divisors (see below), whose sum is σ = 631360537632. Its totient is φ = 88379425280.

The previous prime is 243043422959. The next prime is 243043423069. The reversal of 243043423040 is 40324340342.

It is a junction number, because it is equal to n+sod(n) for n = 243043422994 and 243043423012.

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, 34519694 + ... + 34526733.

Almost surely, 2^243043423040 is an apocalyptic number.

243043423040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243043423040 is an abundant number, since it is smaller than the sum of its proper divisors (388317114592).

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

243043423040 is a wasteful number, since it uses less digits than its factorization.

243043423040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69046455 (or 69046445 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 29.

Adding to 243043423040 its reverse (40324340342), we get a palindrome (283367763382).

The spelling of 243043423040 in words is "two hundred forty-three billion, forty-three million, four hundred twenty-three thousand, forty".