144221430 has 32 divisors (see below), whose sum is σ = 346871808. Its totient is φ = 38376800.

The previous prime is 144221423. The next prime is 144221447. The reversal of 144221430 is 34122441.

It is a junction number, because it is equal to n+sod(n) for n = 144221397 and 144221406.

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, 9835 + ... + 19625.

It is an arithmetic number, because the mean of its divisors is an integer number (10839744).

Almost surely, 2^144221430 is an apocalyptic number.

144221430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

144221430 is an abundant number, since it is smaller than the sum of its proper divisors (202650378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

144221430 is a wasteful number, since it uses less digits than its factorization.

144221430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10292.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 144221430 is about 12009.2227059040. Note that the first 3 decimals coincide. The cubic root of 144221430 is about 524.4168036433.

Adding to 144221430 its reverse (34122441), we get a palindrome (178343871).

The spelling of 144221430 in words is "one hundred forty-four million, two hundred twenty-one thousand, four hundred thirty".