144012520 has 32 divisors (see below), whose sum is σ = 325312200. Its totient is φ = 57376768.

The previous prime is 144012509. The next prime is 144012529. The reversal of 144012520 is 25210441.

It can be written as a sum of positive squares in 4 ways, for example, as 143952004 + 60516 = 11998^2 + 246^2 .

It is not an unprimeable number, because it can be changed into a prime (144012529) 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 7 ways as a sum of consecutive naturals, for example, 3276 + ... + 17284.

Almost surely, 2^144012520 is an apocalyptic number.

144012520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144012520 is an abundant number, since it is smaller than the sum of its proper divisors (181299680).

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

144012520 is a wasteful number, since it uses less digits than its factorization.

144012520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14277 (or 14273 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 144012520 is about 12000.5216553282. The cubic root of 144012520 is about 524.1634689952.

Adding to 144012520 its reverse (25210441), we get a palindrome (169222961).

The spelling of 144012520 in words is "one hundred forty-four million, twelve thousand, five hundred twenty".