144421500 has 48 divisors (see below), whose sum is σ = 420559776. Its totient is φ = 38512000.

The previous prime is 144421499. The next prime is 144421507. The reversal of 144421500 is 5124441.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144421507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46641 + ... + 49640.

It is an arithmetic number, because the mean of its divisors is an integer number (8761662).

Almost surely, 2^144421500 is an apocalyptic number.

144421500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144421500 is an abundant number, since it is smaller than the sum of its proper divisors (276138276).

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

144421500 is a wasteful number, since it uses less digits than its factorization.

144421500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96303 (or 96291 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 144421500 is about 12017.5496670494. The cubic root of 144421500 is about 524.6591892369.

Adding to 144421500 its reverse (5124441), we get a palindrome (149545941).

The spelling of 144421500 in words is "one hundred forty-four million, four hundred twenty-one thousand, five hundred".