144421501 has 8 divisors (see below), whose sum is σ = 165169280. Its totient is φ = 123702768.

The previous prime is 144421499. The next prime is 144421507. The reversal of 144421501 is 105124441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 144421501 - 2¹ = 144421499 is a prime.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 4720 + ... + 17638.

It is an arithmetic number, because the mean of its divisors is an integer number (20646160).

Almost surely, 2^144421501 is an apocalyptic number.

It is an amenable number.

144421501 is a deficient number, since it is larger than the sum of its proper divisors (20747779).

144421501 is a wasteful number, since it uses less digits than its factorization.

144421501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14523.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 144421501 is about 12017.5497086553. The cubic root of 144421501 is about 524.6591904478.

Adding to 144421501 its reverse (105124441), we get a palindrome (249545942).

The spelling of 144421501 in words is "one hundred forty-four million, four hundred twenty-one thousand, five hundred one".