144500421 has 16 divisors (see below), whose sum is σ = 216510336. Its totient is φ = 85056576.

The previous prime is 144500387. The next prime is 144500423. The reversal of 144500421 is 124005441.

It is a happy number.

144500421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 144500421 - 2¹⁷ = 144369349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144500423) 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, 79650 + ... + 81443.

It is an arithmetic number, because the mean of its divisors is an integer number (13531896).

Almost surely, 2^144500421 is an apocalyptic number.

It is an amenable number.

144500421 is a deficient number, since it is larger than the sum of its proper divisors (72009915).

144500421 is a wasteful number, since it uses less digits than its factorization.

144500421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161132.

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

The square root of 144500421 is about 12020.8327914500. The cubic root of 144500421 is about 524.7547407712.

Adding to 144500421 its reverse (124005441), we get a palindrome (268505862).

The spelling of 144500421 in words is "one hundred forty-four million, five hundred thousand, four hundred twenty-one".