144442273 has 2 divisors, whose sum is σ = 144442274. Its totient is φ = 144442272.

The previous prime is 144442247. The next prime is 144442297. The reversal of 144442273 is 372244441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90022144 + 54420129 = 9488^2 + 7377^2 .

It is an emirp because it is prime and its reverse (372244441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 144442273 - 2¹⁷ = 144311201 is a prime.

It is equal to p_8149072 and since 144442273 and 8149072 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (144442213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72221136 + 72221137.

It is an arithmetic number, because the mean of its divisors is an integer number (72221137).

Almost surely, 2^144442273 is an apocalyptic number.

It is an amenable number.

144442273 is a deficient number, since it is larger than the sum of its proper divisors (1).

144442273 is an equidigital number, since it uses as much as digits as its factorization.

144442273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21504, while the sum is 31.

The square root of 144442273 is about 12018.4139136577. The cubic root of 144442273 is about 524.6843429774.

The spelling of 144442273 in words is "one hundred forty-four million, four hundred forty-two thousand, two hundred seventy-three".