1045243305 has 32 divisors (see below), whose sum is σ = 1859857920. Its totient is φ = 556968960.

The previous prime is 1045243289. The next prime is 1045243307. The reversal of 1045243305 is 5033425401.

1045243305 is a `hidden beast` number, since 104 + 524 + 3 + 30 + 5 = 666.

It is not a de Polignac number, because 1045243305 - 2⁴ = 1045243289 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1045243307) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 189385 + ... + 194825.

It is an arithmetic number, because the mean of its divisors is an integer number (58120560).

Almost surely, 2^1045243305 is an apocalyptic number.

1045243305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1045243305 is a deficient number, since it is larger than the sum of its proper divisors (814614615).

1045243305 is a wasteful number, since it uses less digits than its factorization.

1045243305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6878 (or 6872 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 1045243305 is about 32330.2227799315. Note that the first 3 decimals coincide. The cubic root of 1045243305 is about 1014.8592118702.

Adding to 1045243305 its reverse (5033425401), we get a palindrome (6078668706).

The spelling of 1045243305 in words is "one billion, forty-five million, two hundred forty-three thousand, three hundred five".