144211440 has 40 divisors (see below), whose sum is σ = 447056208. Its totient is φ = 38456320.

The previous prime is 144211439. The next prime is 144211447. The reversal of 144211440 is 44112441.

144211440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144211447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 300201 + ... + 300680.

Almost surely, 2^144211440 is an apocalyptic number.

144211440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144211440 is an abundant number, since it is smaller than the sum of its proper divisors (302844768).

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

144211440 is a wasteful number, since it uses less digits than its factorization.

144211440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600897 (or 600891 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 144211440 is about 12008.8067683680. The cubic root of 144211440 is about 524.4046948445.

Adding to 144211440 its reverse (44112441), we get a palindrome (188323881).

The spelling of 144211440 in words is "one hundred forty-four million, two hundred eleven thousand, four hundred forty".