242444440 has 64 divisors (see below), whose sum is σ = 629674560. Its totient is φ = 82291200.

The previous prime is 242444431. The next prime is 242444467. The reversal of 242444440 is 44444242.

242444440 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 242444399 and 242444408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23994 + ... + 32566.

It is an arithmetic number, because the mean of its divisors is an integer number (9838665).

Almost surely, 2^242444440 is an apocalyptic number.

242444440 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 242444440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (314837280).

242444440 is an abundant number, since it is smaller than the sum of its proper divisors (387230120).

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

242444440 is a wasteful number, since it uses less digits than its factorization.

242444440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8692 (or 8688 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

The square root of 242444440 is about 15570.6274761167. The cubic root of 242444440 is about 623.5492238032.

Adding to 242444440 its reverse (44444242), we get a palindrome (286888682).

It can be divided in two parts, 2424 and 44440, that added together give a palindrome (46864).

The spelling of 242444440 in words is "two hundred forty-two million, four hundred forty-four thousand, four hundred forty".