243030272420 has 144 divisors (see below), whose sum is σ = 575389592064. Its totient is φ = 85675699200.

The previous prime is 243030272339. The next prime is 243030272437. The reversal of 243030272420 is 24272030342.

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, 20535905 + ... + 20547735.

It is an arithmetic number, because the mean of its divisors is an integer number (3995761056).

Almost surely, 2^243030272420 is an apocalyptic number.

243030272420 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 243030272420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (287694796032).

243030272420 is an abundant number, since it is smaller than the sum of its proper divisors (332359319644).

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

243030272420 is a wasteful number, since it uses less digits than its factorization.

243030272420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11982 (or 11939 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 29.

The spelling of 243030272420 in words is "two hundred forty-three billion, thirty million, two hundred seventy-two thousand, four hundred twenty".