1243013041 has 4 divisors (see below), whose sum is σ = 1308434800. Its totient is φ = 1177591284.

The previous prime is 1243013017. The next prime is 1243013047. The reversal of 1243013041 is 1403103421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1243013041 - 2¹³ = 1243004849 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 65421739 = 1243013041 / (1 + 2 + 4 + 3 + 0 + 1 + 3 + 0 + 4 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1243013047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32710851 + ... + 32710888.

It is an arithmetic number, because the mean of its divisors is an integer number (327108700).

Almost surely, 2^1243013041 is an apocalyptic number.

It is an amenable number.

1243013041 is a deficient number, since it is larger than the sum of its proper divisors (65421759).

1243013041 is an equidigital number, since it uses as much as digits as its factorization.

1243013041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65421758.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1243013041 is about 35256.3900732903. The cubic root of 1243013041 is about 1075.2065342489.

Adding to 1243013041 its reverse (1403103421), we get a palindrome (2646116462).

The spelling of 1243013041 in words is "one billion, two hundred forty-three million, thirteen thousand, forty-one".