144421305 has 64 divisors (see below), whose sum is σ = 279797760. Its totient is φ = 62205696.

The previous prime is 144421297. The next prime is 144421327. The reversal of 144421305 is 503124441.

It is not a de Polignac number, because 144421305 - 2³ = 144421297 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 130384 + ... + 131486.

It is an arithmetic number, because the mean of its divisors is an integer number (4371840).

Almost surely, 2^144421305 is an apocalyptic number.

144421305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

144421305 is a deficient number, since it is larger than the sum of its proper divisors (135376455).

144421305 is a wasteful number, since it uses less digits than its factorization.

144421305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1190.

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

The square root of 144421305 is about 12017.5415539119. The cubic root of 144421305 is about 524.6589531026.

Adding to 144421305 its reverse (503124441), we get a palindrome (647545746).

The spelling of 144421305 in words is "one hundred forty-four million, four hundred twenty-one thousand, three hundred five".