144565140 has 96 divisors (see below), whose sum is σ = 418239360. Its totient is φ = 37287936.

The previous prime is 144565123. The next prime is 144565147. The reversal of 144565140 is 41565441.

144565140 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 (30).

It is a junction number, because it is equal to n+sod(n) for n = 144565098 and 144565107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144565147) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 353256 + ... + 353664.

It is an arithmetic number, because the mean of its divisors is an integer number (4356660).

Almost surely, 2^144565140 is an apocalyptic number.

144565140 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 144565140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (209119680).

144565140 is an abundant number, since it is smaller than the sum of its proper divisors (273674220).

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

144565140 is a wasteful number, since it uses less digits than its factorization.

144565140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601 (or 599 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 144565140 is about 12023.5244416935. The cubic root of 144565140 is about 524.8330716458.

The spelling of 144565140 in words is "one hundred forty-four million, five hundred sixty-five thousand, one hundred forty".