144532021 has 2 divisors, whose sum is σ = 144532022. Its totient is φ = 144532020.

The previous prime is 144532019. The next prime is 144532057. The reversal of 144532021 is 120235441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107868996 + 36663025 = 10386^2 + 6055^2 .

It is a cyclic number.

It is not a de Polignac number, because 144532021 - 2¹ = 144532019 is a prime.

Together with 144532019, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 144531983 and 144532001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144532121) 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 as a sum of consecutive naturals, namely, 72266010 + 72266011.

It is an arithmetic number, because the mean of its divisors is an integer number (72266011).

Almost surely, 2^144532021 is an apocalyptic number.

It is an amenable number.

144532021 is a deficient number, since it is larger than the sum of its proper divisors (1).

144532021 is an equidigital number, since it uses as much as digits as its factorization.

144532021 is an odious number, because the sum of its binary digits is odd.

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

The square root of 144532021 is about 12022.1471044069. The cubic root of 144532021 is about 524.7929898898.

Adding to 144532021 its reverse (120235441), we get a palindrome (264767462).

The spelling of 144532021 in words is "one hundred forty-four million, five hundred thirty-two thousand, twenty-one".