144240015 has 16 divisors (see below), whose sum is σ = 240818688. Its totient is φ = 73583136.

The previous prime is 144240013. The next prime is 144240029. The reversal of 144240015 is 510042441.

It is a happy number.

It is not a de Polignac number, because 144240015 - 2¹ = 144240013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 144239973 and 144240000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144240013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 208699 + ... + 209388.

It is an arithmetic number, because the mean of its divisors is an integer number (15051168).

Almost surely, 2^144240015 is an apocalyptic number.

144240015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

144240015 is a deficient number, since it is larger than the sum of its proper divisors (96578673).

144240015 is a wasteful number, since it uses less digits than its factorization.

144240015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418118.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 144240015 is about 12009.9964612817. The cubic root of 144240015 is about 524.4393288849.

Adding to 144240015 its reverse (510042441), we get a palindrome (654282456).

The spelling of 144240015 in words is "one hundred forty-four million, two hundred forty thousand, fifteen".