1243041033 has 16 divisors (see below), whose sum is σ = 1826390720. Its totient is φ = 747157824.

The previous prime is 1243041031. The next prime is 1243041043. The reversal of 1243041033 is 3301403421.

It is not a de Polignac number, because 1243041033 - 2¹ = 1243041031 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1243041031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 368938 + ... + 372291.

It is an arithmetic number, because the mean of its divisors is an integer number (114149420).

Almost surely, 2^1243041033 is an apocalyptic number.

1243041033 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1243041033 is a deficient number, since it is larger than the sum of its proper divisors (583349687).

1243041033 is a wasteful number, since it uses less digits than its factorization.

1243041033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741288.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 1243041033 is about 35256.7870487372. The cubic root of 1243041033 is about 1075.2146052169.

Adding to 1243041033 its reverse (3301403421), we get a palindrome (4544444454).

The spelling of 1243041033 in words is "one billion, two hundred forty-three million, forty-one thousand, thirty-three".