144221415 has 32 divisors (see below), whose sum is σ = 249090240. Its totient is φ = 70834176.

The previous prime is 144221401. The next prime is 144221423. The reversal of 144221415 is 514122441.

It is not a de Polignac number, because 144221415 - 2⁵ = 144221383 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 31 ways as a sum of consecutive naturals, for example, 142431 + ... + 143439.

It is an arithmetic number, because the mean of its divisors is an integer number (7784070).

Almost surely, 2^144221415 is an apocalyptic number.

144221415 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

144221415 is a deficient number, since it is larger than the sum of its proper divisors (104868825).

144221415 is a wasteful number, since it uses less digits than its factorization.

144221415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1763.

The product of its digits is 1280, while the sum is 24.

The square root of 144221415 is about 12009.2220813840. Note that the first 3 decimals coincide. The cubic root of 144221415 is about 524.4167854623.

Adding to 144221415 its reverse (514122441), we get a palindrome (658343856).

The spelling of 144221415 in words is "one hundred forty-four million, two hundred twenty-one thousand, four hundred fifteen".