1145321250 has 40 divisors (see below), whose sum is σ = 2862396240. Its totient is φ = 305418000.

The previous prime is 1145321209. The next prime is 1145321279. The reversal of 1145321250 is 521235411.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1145321250.

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 19 ways as a sum of consecutive naturals, for example, 148960 + ... + 156459.

It is an arithmetic number, because the mean of its divisors is an integer number (71559906).

Almost surely, 2^1145321250 is an apocalyptic number.

1145321250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1145321250 is an abundant number, since it is smaller than the sum of its proper divisors (1717074990).

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

1145321250 is an equidigital number, since it uses as much as digits as its factorization.

1145321250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305444 (or 305429 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 1145321250 is about 33842.5952019050. The cubic root of 1145321250 is about 1046.2667878700.

Adding to 1145321250 its reverse (521235411), we get a palindrome (1666556661).

The spelling of 1145321250 in words is "one billion, one hundred forty-five million, three hundred twenty-one thousand, two hundred fifty".