144413021 has 4 divisors (see below), whose sum is σ = 150691872. Its totient is φ = 138134172.

The previous prime is 144412993. The next prime is 144413033. The reversal of 144413021 is 120314441.

144413021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 144413021 - 2¹⁰ = 144411997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 144412984 and 144413002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144413051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3139391 + ... + 3139436.

It is an arithmetic number, because the mean of its divisors is an integer number (37672968).

Almost surely, 2^144413021 is an apocalyptic number.

It is an amenable number.

144413021 is a deficient number, since it is larger than the sum of its proper divisors (6278851).

144413021 is an equidigital number, since it uses as much as digits as its factorization.

144413021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6278850.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 144413021 is about 12017.1968861295. The cubic root of 144413021 is about 524.6489214389.

Adding to 144413021 its reverse (120314441), we get a palindrome (264727462).

The spelling of 144413021 in words is "one hundred forty-four million, four hundred thirteen thousand, twenty-one".