144513240 has 128 divisors (see below), whose sum is σ = 459993600. Its totient is φ = 36218880.

The previous prime is 144513169. The next prime is 144513247. The reversal of 144513240 is 42315441.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 144513240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144513247) 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, 549349 + ... + 549611.

It is an arithmetic number, because the mean of its divisors is an integer number (3593700).

Almost surely, 2^144513240 is an apocalyptic number.

144513240 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 144513240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (229996800).

144513240 is an abundant number, since it is smaller than the sum of its proper divisors (315480360).

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

144513240 is a wasteful number, since it uses less digits than its factorization.

144513240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537 (or 533 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 144513240 is about 12021.3659789560. The cubic root of 144513240 is about 524.7702577551.

Adding to 144513240 its reverse (42315441), we get a palindrome (186828681).

The spelling of 144513240 in words is "one hundred forty-four million, five hundred thirteen thousand, two hundred forty".