145044321 has 8 divisors (see below), whose sum is σ = 193452480. Its totient is φ = 96666192.

The previous prime is 145044313. The next prime is 145044337. The reversal of 145044321 is 123440541.

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

It is not a de Polignac number, because 145044321 - 2³ = 145044313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 145044291 and 145044300.

It is not an unprimeable number, because it can be changed into a prime (145044311) 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, 8871 + ... + 19203.

It is an arithmetic number, because the mean of its divisors is an integer number (24181560).

Almost surely, 2^145044321 is an apocalyptic number.

It is an amenable number.

145044321 is a deficient number, since it is larger than the sum of its proper divisors (48408159).

145044321 is a wasteful number, since it uses less digits than its factorization.

145044321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15015.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 145044321 is about 12043.4347675404. The cubic root of 145044321 is about 525.4123092144.

Adding to 145044321 its reverse (123440541), we get a palindrome (268484862).

The spelling of 145044321 in words is "one hundred forty-five million, forty-four thousand, three hundred twenty-one".