144936321 has 4 divisors (see below), whose sum is σ = 193248432. Its totient is φ = 96624212.

The previous prime is 144936307. The next prime is 144936329. The reversal of 144936321 is 123639441.

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 144936321 - 2⁶ = 144936257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (144936329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24156051 + ... + 24156056.

It is an arithmetic number, because the mean of its divisors is an integer number (48312108).

Almost surely, 2^144936321 is an apocalyptic number.

It is an amenable number.

144936321 is a deficient number, since it is larger than the sum of its proper divisors (48312111).

144936321 is an equidigital number, since it uses as much as digits as its factorization.

144936321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48312110.

The product of its digits is 15552, while the sum is 33.

The square root of 144936321 is about 12038.9501618704. The cubic root of 144936321 is about 525.2818695005.

The spelling of 144936321 in words is "one hundred forty-four million, nine hundred thirty-six thousand, three hundred twenty-one".