1045143253 has 32 divisors (see below), whose sum is σ = 1373386752. Its totient is φ = 771144000.

The previous prime is 1045143247. The next prime is 1045143301. The reversal of 1045143253 is 3523415401.

It is not a de Polignac number, because 1045143253 - 2¹⁷ = 1045012181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1045143223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 175950 + ... + 181792.

It is an arithmetic number, because the mean of its divisors is an integer number (42918336).

Almost surely, 2^1045143253 is an apocalyptic number.

It is an amenable number.

1045143253 is a deficient number, since it is larger than the sum of its proper divisors (328243499).

1045143253 is a wasteful number, since it uses less digits than its factorization.

1045143253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5985.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 1045143253 is about 32328.6753981663. The cubic root of 1045143253 is about 1014.8268296381.

Adding to 1045143253 its reverse (3523415401), we get a palindrome (4568558654).

The spelling of 1045143253 in words is "one billion, forty-five million, one hundred forty-three thousand, two hundred fifty-three".