144321345 has 96 divisors (see below), whose sum is σ = 301916160. Its totient is φ = 64774080.

The previous prime is 144321329. The next prime is 144321377. The reversal of 144321345 is 543123441.

It is a happy number.

144321345 is a `hidden beast` number, since 1 + 443 + 213 + 4 + 5 = 666.

It is not a de Polignac number, because 144321345 - 2⁴ = 144321329 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 603736 + ... + 603974.

It is an arithmetic number, because the mean of its divisors is an integer number (3144960).

Almost surely, 2^144321345 is an apocalyptic number.

144321345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

144321345 is an abundant number, since it is smaller than the sum of its proper divisors (157594815).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

144321345 is an equidigital number, since it uses as much as digits as its factorization.

144321345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337 (or 325 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 144321345 is about 12013.3819135163. The cubic root of 144321345 is about 524.5378790608.

Adding to 144321345 its reverse (543123441), we get a palindrome (687444786).

It can be divided in two parts, 144 and 321345, that added together give a square (321489 = 567²).

The spelling of 144321345 in words is "one hundred forty-four million, three hundred twenty-one thousand, three hundred forty-five".