144240440 has 16 divisors (see below), whose sum is σ = 324541080. Its totient is φ = 57696160.

The previous prime is 144240379. The next prime is 144240443. The reversal of 144240440 is 44042441.

144240440 = 2995² + 2996² + ... + 3010².

144240440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144240443) 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, 1802966 + ... + 1803045.

Almost surely, 2^144240440 is an apocalyptic number.

144240440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144240440 is an abundant number, since it is smaller than the sum of its proper divisors (180300640).

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

144240440 is a wasteful number, since it uses less digits than its factorization.

144240440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3606022 (or 3606018 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 23.

The square root of 144240440 is about 12010.0141548626. The cubic root of 144240440 is about 524.4398439673.

Adding to 144240440 its reverse (44042441), we get a palindrome (188282881).

The spelling of 144240440 in words is "one hundred forty-four million, two hundred forty thousand, four hundred forty".