144021413 has 4 divisors (see below), whose sum is σ = 144349920. Its totient is φ = 143692908.

The previous prime is 144021407. The next prime is 144021439. The reversal of 144021413 is 314120441.

144021413 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 144021413 - 2¹² = 144017317 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144021473) 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, 163595 + ... + 164472.

It is an arithmetic number, because the mean of its divisors is an integer number (36087480).

Almost surely, 2^144021413 is an apocalyptic number.

It is an amenable number.

144021413 is a deficient number, since it is larger than the sum of its proper divisors (328507).

144021413 is an equidigital number, since it uses as much as digits as its factorization.

144021413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328506.

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

The square root of 144021413 is about 12000.8921751676. The cubic root of 144021413 is about 524.1742580798.

Adding to 144021413 its reverse (314120441), we get a palindrome (458141854).

The spelling of 144021413 in words is "one hundred forty-four million, twenty-one thousand, four hundred thirteen".