144612321 has 8 divisors (see below), whose sum is σ = 220361664. Its totient is φ = 82635600.

The previous prime is 144612301. The next prime is 144612329. The reversal of 144612321 is 123216441.

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

It is not a de Polignac number, because 144612321 - 2¹³ = 144604129 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 144612291 and 144612300.

It is not an unprimeable number, because it can be changed into a prime (144612329) 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, 3443130 + ... + 3443171.

It is an arithmetic number, because the mean of its divisors is an integer number (27545208).

Almost surely, 2^144612321 is an apocalyptic number.

It is an amenable number.

144612321 is a deficient number, since it is larger than the sum of its proper divisors (75749343).

144612321 is an equidigital number, since it uses as much as digits as its factorization.

144612321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6886311.

The product of its digits is 1152, while the sum is 24.

The square root of 144612321 is about 12025.4863103327. The cubic root of 144612321 is about 524.8901611484.

Adding to 144612321 its reverse (123216441), we get a palindrome (267828762).

The spelling of 144612321 in words is "one hundred forty-four million, six hundred twelve thousand, three hundred twenty-one".