1253541043 has 4 divisors (see below), whose sum is σ = 1253622568. Its totient is φ = 1253459520.

The previous prime is 1253541041. The next prime is 1253541049. The reversal of 1253541043 is 3401453521.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1253541043 - 2¹ = 1253541041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1253541041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9918 + ... + 51043.

It is an arithmetic number, because the mean of its divisors is an integer number (313405642).

Almost surely, 2^1253541043 is an apocalyptic number.

1253541043 is a deficient number, since it is larger than the sum of its proper divisors (81525).

1253541043 is an equidigital number, since it uses as much as digits as its factorization.

1253541043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81524.

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

The square root of 1253541043 is about 35405.3815542214. The cubic root of 1253541043 is about 1078.2335787956.

Adding to 1253541043 its reverse (3401453521), we get a palindrome (4654994564).

The spelling of 1253541043 in words is "one billion, two hundred fifty-three million, five hundred forty-one thousand, forty-three".