144074521 has 4 divisors (see below), whose sum is σ = 144104832. Its totient is φ = 144044212.

The previous prime is 144074509. The next prime is 144074527. The reversal of 144074521 is 125470441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 144074521 - 2⁷ = 144074393 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 144074521.

It is not an unprimeable number, because it can be changed into a prime (144074527) 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 3 ways as a sum of consecutive naturals, for example, 6301 + ... + 18106.

It is an arithmetic number, because the mean of its divisors is an integer number (36026208).

Almost surely, 2^144074521 is an apocalyptic number.

It is an amenable number.

144074521 is a deficient number, since it is larger than the sum of its proper divisors (30311).

144074521 is an equidigital number, since it uses as much as digits as its factorization.

144074521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30310.

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 144074521 is about 12003.1046400504. The cubic root of 144074521 is about 524.2386800406.

The spelling of 144074521 in words is "one hundred forty-four million, seventy-four thousand, five hundred twenty-one".