1243541012 has 24 divisors (see below), whose sum is σ = 2537841600. Its totient is φ = 532945560.

The previous prime is 1243541011. The next prime is 1243541063. The reversal of 1243541012 is 2101453421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243541011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 451814 + ... + 454557.

It is an arithmetic number, because the mean of its divisors is an integer number (105743400).

Almost surely, 2^1243541012 is an apocalyptic number.

It is an amenable number.

1243541012 is an abundant number, since it is smaller than the sum of its proper divisors (1294300588).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1243541012 is an equidigital number, since it uses as much as digits as its factorization.

1243541012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906396 (or 906380 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 1243541012 is about 35263.8768713821. The cubic root of 1243541012 is about 1075.3587443748.

Adding to 1243541012 its reverse (2101453421), we get a palindrome (3344994433).

The spelling of 1243541012 in words is "one billion, two hundred forty-three million, five hundred forty-one thousand, twelve".