144662321 has 2 divisors, whose sum is σ = 144662322. Its totient is φ = 144662320.

The previous prime is 144662303. The next prime is 144662327. The reversal of 144662321 is 123266441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120209296 + 24453025 = 10964^2 + 4945^2 .

It is a cyclic number.

It is not a de Polignac number, because 144662321 - 2¹⁸ = 144400177 is a prime.

It is not a weakly prime, because it can be changed into another prime (144662327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72331160 + 72331161.

It is an arithmetic number, because the mean of its divisors is an integer number (72331161).

Almost surely, 2^144662321 is an apocalyptic number.

It is an amenable number.

144662321 is a deficient number, since it is larger than the sum of its proper divisors (1).

144662321 is an equidigital number, since it uses as much as digits as its factorization.

144662321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 29.

The square root of 144662321 is about 12027.5650486705. The cubic root of 144662321 is about 524.9506481198.

The spelling of 144662321 in words is "one hundred forty-four million, six hundred sixty-two thousand, three hundred twenty-one".