1145241043 has 4 divisors (see below), whose sum is σ = 1145446000. Its totient is φ = 1145036088.

The previous prime is 1145240981. The next prime is 1145241049. The reversal of 1145241043 is 3401425411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3401425411 = 13967 ⋅243533.

It is a cyclic number.

It is not a de Polignac number, because 1145241043 - 2⁹ = 1145240531 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1145240999 and 1145241017.

It is not an unprimeable number, because it can be changed into a prime (1145241049) 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, 93855 + ... + 105352.

It is an arithmetic number, because the mean of its divisors is an integer number (286361500).

Almost surely, 2^1145241043 is an apocalyptic number.

1145241043 is a deficient number, since it is larger than the sum of its proper divisors (204957).

1145241043 is an equidigital number, since it uses as much as digits as its factorization.

1145241043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204956.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 1145241043 is about 33841.4101804284. The cubic root of 1145241043 is about 1046.2423638989.

Adding to 1145241043 its reverse (3401425411), we get a palindrome (4546666454).

The spelling of 1145241043 in words is "one billion, one hundred forty-five million, two hundred forty-one thousand, forty-three".