144421256 has 32 divisors (see below), whose sum is σ = 327680640. Its totient is φ = 58253568.

The previous prime is 144421253. The next prime is 144421283. The reversal of 144421256 is 652124441.

It is not an unprimeable number, because it can be changed into a prime (144421253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74900 + ... + 76803.

It is an arithmetic number, because the mean of its divisors is an integer number (10240020).

Almost surely, 2^144421256 is an apocalyptic number.

It is an amenable number.

144421256 is an abundant number, since it is smaller than the sum of its proper divisors (183259384).

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

144421256 is a wasteful number, since it uses less digits than its factorization.

144421256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151733 (or 151729 counting only the distinct ones).

The product of its digits is 7680, while the sum is 29.

The square root of 144421256 is about 12017.5395152252. The cubic root of 144421256 is about 524.6588937663.

Adding to 144421256 its reverse (652124441), we get a palindrome (796545697).

The spelling of 144421256 in words is "one hundred forty-four million, four hundred twenty-one thousand, two hundred fifty-six".