240020420240 has 80 divisors (see below), whose sum is σ = 560247891840. Its totient is φ = 95630069760.

The previous prime is 240020420239. The next prime is 240020420249. The reversal of 240020420240 is 42024020042.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (240020420249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46995767 + ... + 47000873.

It is an arithmetic number, because the mean of its divisors is an integer number (7003098648).

Almost surely, 2^240020420240 is an apocalyptic number.

240020420240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

240020420240 is an abundant number, since it is smaller than the sum of its proper divisors (320227471600).

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

240020420240 is a wasteful number, since it uses less digits than its factorization.

240020420240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7320 (or 7314 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 240020420240 its reverse (42024020042), we get a palindrome (282044440282).

The spelling of 240020420240 in words is "two hundred forty billion, twenty million, four hundred twenty thousand, two hundred forty".