242440144 has 20 divisors (see below), whose sum is σ = 473888196. Its totient is φ = 120146432.

The previous prime is 242440139. The next prime is 242440207. The reversal of 242440144 is 441044242.

242440144 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 86490000 + 155950144 = 9300^2 + 12488^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65239 + ... + 68854.

Almost surely, 2^242440144 is an apocalyptic number.

It is an amenable number.

242440144 is a deficient number, since it is larger than the sum of its proper divisors (231448052).

242440144 is a wasteful number, since it uses less digits than its factorization.

242440144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134214 (or 134208 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 25.

The square root of 242440144 is about 15570.4895234543. The cubic root of 242440144 is about 623.5455407830.

Adding to 242440144 its reverse (441044242), we get a palindrome (683484386).

The spelling of 242440144 in words is "two hundred forty-two million, four hundred forty thousand, one hundred forty-four".