240444242440 has 16 divisors (see below), whose sum is σ = 540999545580. Its totient is φ = 96177696960.

The previous prime is 240444242399. The next prime is 240444242447. The reversal of 240444242440 is 44242444042.

It can be written as a sum of positive squares in 2 ways, for example, as 220901880004 + 19542362436 = 470002^2 + 139794^2 .

It is a junction number, because it is equal to n+sod(n) for n = 240444242396 and 240444242405.

It is not an unprimeable number, because it can be changed into a prime (240444242447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3005552991 + ... + 3005553070.

Almost surely, 2^240444242440 is an apocalyptic number.

240444242440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

240444242440 is an abundant number, since it is smaller than the sum of its proper divisors (300555303140).

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

240444242440 is a wasteful number, since it uses less digits than its factorization.

240444242440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6011106072 (or 6011106068 counting only the distinct ones).

The product of its (nonzero) digits is 131072, while the sum is 34.

Adding to 240444242440 its reverse (44242444042), we get a palindrome (284686686482).

The spelling of 240444242440 in words is "two hundred forty billion, four hundred forty-four million, two hundred forty-two thousand, four hundred forty".