144002040 has 128 divisors (see below), whose sum is σ = 531740160. Its totient is φ = 30380544.

The previous prime is 144002021. The next prime is 144002101. The reversal of 144002040 is 40200441.

144002040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a nialpdrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4327 + ... + 17513.

It is an arithmetic number, because the mean of its divisors is an integer number (4154220).

Almost surely, 2^144002040 is an apocalyptic number.

144002040 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 144002040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (265870080).

144002040 is an abundant number, since it is smaller than the sum of its proper divisors (387738120).

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

144002040 is a wasteful number, since it uses less digits than its factorization.

144002040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13221 (or 13217 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 144002040 is about 12000.0849996990. The cubic root of 144002040 is about 524.1507539747.

Adding to 144002040 its reverse (40200441), we get a palindrome (184202481).

The spelling of 144002040 in words is "one hundred forty-four million, two thousand, forty".