144021273 has 16 divisors (see below), whose sum is σ = 220512000. Its totient is φ = 82691280.

The previous prime is 144021209. The next prime is 144021277. The reversal of 144021273 is 372120441.

It is a happy number.

It is not a de Polignac number, because 144021273 - 2⁶ = 144021209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (144021277) 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 in 15 ways as a sum of consecutive naturals, for example, 114223 + ... + 115476.

It is an arithmetic number, because the mean of its divisors is an integer number (13782000).

Almost surely, 2^144021273 is an apocalyptic number.

It is an amenable number.

144021273 is a deficient number, since it is larger than the sum of its proper divisors (76490727).

144021273 is a wasteful number, since it uses less digits than its factorization.

144021273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229732.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 144021273 is about 12000.8863422666. The cubic root of 144021273 is about 524.1740882337.

The spelling of 144021273 in words is "one hundred forty-four million, twenty-one thousand, two hundred seventy-three".