1145143250 has 32 divisors (see below), whose sum is σ = 2189341440. Its totient is φ = 448306800.

The previous prime is 1145143231. The next prime is 1145143253. The reversal of 1145143250 is 523415411.

It is a super-2 number, since 2×1145143250² = 2622706126041125000, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1145143253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36980 + ... + 60479.

It is an arithmetic number, because the mean of its divisors is an integer number (68416920).

Almost surely, 2^1145143250 is an apocalyptic number.

1145143250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1145143250 is a deficient number, since it is larger than the sum of its proper divisors (1044198190).

1145143250 is an equidigital number, since it uses as much as digits as its factorization.

1145143250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97523 (or 97513 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 1145143250 is about 33839.9652777600. The cubic root of 1145143250 is about 1046.2125832419.

Adding to 1145143250 its reverse (523415411), we get a palindrome (1668558661).

The spelling of 1145143250 in words is "one billion, one hundred forty-five million, one hundred forty-three thousand, two hundred fifty".