144042140 has 48 divisors (see below), whose sum is σ = 334545120. Its totient is φ = 51655680.

The previous prime is 144042137. The next prime is 144042149. The reversal of 144042140 is 41240441.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144042149) 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 15 ways as a sum of consecutive naturals, for example, 11576 + ... + 20544.

It is an arithmetic number, because the mean of its divisors is an integer number (6969690).

Almost surely, 2^144042140 is an apocalyptic number.

144042140 is a gapful number since it is divisible by the number (10) 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 144042140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167272560).

144042140 is an abundant number, since it is smaller than the sum of its proper divisors (190502980).

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

144042140 is a wasteful number, since it uses less digits than its factorization.

144042140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9062 (or 9060 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 144042140 is about 12001.7557048958. The cubic root of 144042140 is about 524.1994025785.

Adding to 144042140 its reverse (41240441), we get a palindrome (185282581).

The spelling of 144042140 in words is "one hundred forty-four million, forty-two thousand, one hundred forty".