144230521 has 4 divisors (see below), whose sum is σ = 144617572. Its totient is φ = 143843472.

The previous prime is 144230509. The next prime is 144230531. The reversal of 144230521 is 125032441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 125032441 = 571 ⋅218971.

It can be written as a sum of positive squares in 2 ways, for example, as 31764496 + 112466025 = 5636^2 + 10605^2 .

It is a cyclic number.

It is not a de Polignac number, because 144230521 - 2¹³ = 144222329 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 144230492 and 144230501.

It is not an unprimeable number, because it can be changed into a prime (144230531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192966 + ... + 193711.

It is an arithmetic number, because the mean of its divisors is an integer number (36154393).

Almost surely, 2^144230521 is an apocalyptic number.

It is an amenable number.

144230521 is a deficient number, since it is larger than the sum of its proper divisors (387051).

144230521 is an equidigital number, since it uses as much as digits as its factorization.

144230521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387050.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 144230521 is about 12009.6012007060. The cubic root of 144230521 is about 524.4278222854.

Adding to 144230521 its reverse (125032441), we get a palindrome (269262962).

The spelling of 144230521 in words is "one hundred forty-four million, two hundred thirty thousand, five hundred twenty-one".