144323421 has 48 divisors (see below), whose sum is σ = 229586880. Its totient is φ = 79902720.

The previous prime is 144323407. The next prime is 144323423. The reversal of 144323421 is 124323441.

144323421 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 144323421 - 2¹³ = 144315229 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 144323391 and 144323400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144323423) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 352665 + ... + 353073.

It is an arithmetic number, because the mean of its divisors is an integer number (4783060).

Almost surely, 2^144323421 is an apocalyptic number.

144323421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

144323421 is a deficient number, since it is larger than the sum of its proper divisors (85263459).

144323421 is a wasteful number, since it uses less digits than its factorization.

144323421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494 (or 477 counting only the distinct ones).

The product of its digits is 2304, while the sum is 24.

The square root of 144323421 is about 12013.4683168517. The cubic root of 144323421 is about 524.5403941320.

Adding to 144323421 its reverse (124323441), we get a palindrome (268646862).

The spelling of 144323421 in words is "one hundred forty-four million, three hundred twenty-three thousand, four hundred twenty-one".