144220605 has 16 divisors (see below), whose sum is σ = 244327104. Its totient is φ = 72392960.

The previous prime is 144220547. The next prime is 144220613. The reversal of 144220605 is 506022441.

It is not a de Polignac number, because 144220605 - 2⁶ = 144220541 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 282531 + ... + 283040.

It is an arithmetic number, because the mean of its divisors is an integer number (15270444).

Almost surely, 2^144220605 is an apocalyptic number.

144220605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

144220605 is a deficient number, since it is larger than the sum of its proper divisors (100106499).

144220605 is a wasteful number, since it uses less digits than its factorization.

144220605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565596.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 144220605 is about 12009.1883572538. The cubic root of 144220605 is about 524.4158036886.

The spelling of 144220605 in words is "one hundred forty-four million, two hundred twenty thousand, six hundred five".