144220273 has 2 divisors, whose sum is σ = 144220274. Its totient is φ = 144220272.

The previous prime is 144220207. The next prime is 144220303. The reversal of 144220273 is 372022441.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 137522529 + 6697744 = 11727^2 + 2588^2 .

It is a cyclic number.

It is not a de Polignac number, because 144220273 - 2¹⁷ = 144089201 is a prime.

It is not a weakly prime, because it can be changed into another prime (144220873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72110136 + 72110137.

It is an arithmetic number, because the mean of its divisors is an integer number (72110137).

Almost surely, 2^144220273 is an apocalyptic number.

It is an amenable number.

144220273 is a deficient number, since it is larger than the sum of its proper divisors (1).

144220273 is an equidigital number, since it uses as much as digits as its factorization.

144220273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 144220273 is about 12009.1745344965. The cubic root of 144220273 is about 524.4154012815.

The spelling of 144220273 in words is "one hundred forty-four million, two hundred twenty thousand, two hundred seventy-three".