144719521 has 8 divisors (see below), whose sum is σ = 156124584. Its totient is φ = 133635840.

The previous prime is 144719503. The next prime is 144719551. The reversal of 144719521 is 125917441.

It can be written as a sum of positive squares in 4 ways, for example, as 41473600 + 103245921 = 6440^2 + 10161^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 144719521 - 2⁹ = 144719009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144719551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79410 + ... + 81211.

It is an arithmetic number, because the mean of its divisors is an integer number (19515573).

Almost surely, 2^144719521 is an apocalyptic number.

It is an amenable number.

144719521 is a deficient number, since it is larger than the sum of its proper divisors (11405063).

144719521 is a wasteful number, since it uses less digits than its factorization.

144719521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160691.

The product of its digits is 10080, while the sum is 34.

The square root of 144719521 is about 12029.9426848177. The cubic root of 144719521 is about 525.0198281249.

The spelling of 144719521 in words is "one hundred forty-four million, seven hundred nineteen thousand, five hundred twenty-one".