1145210321 has 8 divisors (see below), whose sum is σ = 1213561440. Its totient is φ = 1076968768.

The previous prime is 1145210303. The next prime is 1145210327. The reversal of 1145210321 is 1230125411.

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

It is not a de Polignac number, because 1145210321 - 2¹⁴ = 1145193937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1145210293 and 1145210302.

It is not an unprimeable number, because it can be changed into a prime (1145210327) 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 7 ways as a sum of consecutive naturals, for example, 5351 + ... + 48156.

It is an arithmetic number, because the mean of its divisors is an integer number (151695180).

Almost surely, 2^1145210321 is an apocalyptic number.

It is an amenable number.

1145210321 is a deficient number, since it is larger than the sum of its proper divisors (68351119).

1145210321 is a wasteful number, since it uses less digits than its factorization.

1145210321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54783.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 1145210321 is about 33840.9562660395. The cubic root of 1145210321 is about 1046.2330083880.

Adding to 1145210321 its reverse (1230125411), we get a palindrome (2375335732).

The spelling of 1145210321 in words is "one billion, one hundred forty-five million, two hundred ten thousand, three hundred twenty-one".