1243460543 has 4 divisors (see below), whose sum is σ = 1339111368. Its totient is φ = 1147809720.

The previous prime is 1243460531. The next prime is 1243460549. The reversal of 1243460543 is 3450643421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3450643421 = 37 ⋅93260633.

It is a cyclic number.

It is not a de Polignac number, because 1243460543 - 2⁴ = 1243460527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243460549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47825393 + ... + 47825418.

It is an arithmetic number, because the mean of its divisors is an integer number (334777842).

Almost surely, 2^1243460543 is an apocalyptic number.

1243460543 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1243460543 is a deficient number, since it is larger than the sum of its proper divisors (95650825).

1243460543 is an equidigital number, since it uses as much as digits as its factorization.

1243460543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95650824.

The product of its (nonzero) digits is 34560, while the sum is 32.

The square root of 1243460543 is about 35262.7358978285. The cubic root of 1243460543 is about 1075.3355485417.

The spelling of 1243460543 in words is "one billion, two hundred forty-three million, four hundred sixty thousand, five hundred forty-three".