1145250403 has 8 divisors (see below), whose sum is σ = 1315120320. Its totient is φ = 986339880.

The previous prime is 1145250389. The next prime is 1145250419. The reversal of 1145250403 is 3040525411.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1145250403 - 2⁵ = 1145250371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1145250443) 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, 2739625 + ... + 2740042.

It is an arithmetic number, because the mean of its divisors is an integer number (164390040).

Almost surely, 2^1145250403 is an apocalyptic number.

1145250403 is a deficient number, since it is larger than the sum of its proper divisors (169869917).

1145250403 is a wasteful number, since it uses less digits than its factorization.

1145250403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5479697.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1145250403 is about 33841.5484722552. The cubic root of 1145250403 is about 1046.2452141873.

Adding to 1145250403 its reverse (3040525411), we get a palindrome (4185775814).

The spelling of 1145250403 in words is "one billion, one hundred forty-five million, two hundred fifty thousand, four hundred three".