144043840 has 28 divisors (see below), whose sum is σ = 343005156. Its totient is φ = 57617408.

The previous prime is 144043811. The next prime is 144043847. The reversal of 144043840 is 48340441.

It can be written as a sum of positive squares in 2 ways, for example, as 25321024 + 118722816 = 5032^2 + 10896^2 .

It is a junction number, because it is equal to n+sod(n) for n = 144043799 and 144043808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144043847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 224749 + ... + 225388.

Almost surely, 2^144043840 is an apocalyptic number.

144043840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144043840 is an abundant number, since it is smaller than the sum of its proper divisors (198961316).

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

144043840 is an equidigital number, since it uses as much as digits as its factorization.

144043840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450154 (or 450144 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

The square root of 144043840 is about 12001.8265276582. The cubic root of 144043840 is about 524.2014647886.

The spelling of 144043840 in words is "one hundred forty-four million, forty-three thousand, eight hundred forty".